<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>1815-5928</journal-id>
<journal-title><![CDATA[Ingeniería Electrónica, Automática y Comunicaciones]]></journal-title>
<abbrev-journal-title><![CDATA[EAC]]></abbrev-journal-title>
<issn>1815-5928</issn>
<publisher>
<publisher-name><![CDATA[Universidad Tecnológica de La Habana José Antonio Echeverría, Cujae]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1815-59282021000300060</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Monitoreo de calidad del agua en sistema de agua potable rural]]></article-title>
<article-title xml:lang="en"><![CDATA[Water quality monitoring in rural drinking water system]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Conejeros Molina]]></surname>
<given-names><![CDATA[Alvaro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hueichaqueo Pichunman]]></surname>
<given-names><![CDATA[Camilo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Martinez-Jimenez]]></surname>
<given-names><![CDATA[Boris L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[PlaceresRemior]]></surname>
<given-names><![CDATA[Arley]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica de Chile INACAP  ]]></institution>
<addr-line><![CDATA[Temuco ]]></addr-line>
<country>Chile</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Central de Las Villas (UCLV)  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>42</volume>
<numero>3</numero>
<fpage>60</fpage>
<lpage>70</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1815-59282021000300060&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1815-59282021000300060&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1815-59282021000300060&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN El procedimiento existente para analizar la potabilidad y niveles de contaminación de los sistemas de Agua Potable Rural (APR) presenta deficiencias como solo un muestreo mensual, bajo presupuesto y sistema sin vigilancia continua. Este trabajo propone un sistema de análisis y monitoreo en tiempo real de las principales variables que determinan la calidad del agua potable en una APR, sistema de bajo costo capaz de entregar información oportuna. Para lograrlo, se abordan las principales variables que determinan la calidad del agua potable, los sensores adecuados, el sistema de comunicación, la programación, la obtención de un sensor virtual microbiológico basado en inteligencia artificial, el procesamiento de datos en la nube y se validan los resultados a nivel de prototipo. Los sensores empleados son de pH, conductividad, turbidez, sólidos disueltos totales (TDS), temperatura y potencial de reducción de la oxidación (ORP). Para el análisis microbiológico, factor importante y complejo, los sensores poseen un costo inalcanzable para las APR. Aquí se emplea un sensor virtual inteligente basado en sistema difuso para determinar posible contaminación microbiológica, que emplea como entradas los valores de turbidez, ORP, temperatura y TDS. La adquisición de datos se realiza con sistema IoT de bajo costo, un Arduino y una RaspberryPi. Para la programación se emplea Node Red, para computación en la nube se emplea la plataforma IMB Cloud y para la comunicación se emplea red 3G de compañía Entel. Finalmente, se implementa un prototipo donde se comprueba el funcionamiento adecuado de todo el sistema.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT The existing procedure to analyze the potability and contamination levels of the Rural Potable Water (APR) systems has deficiencies such as only a monthly sampling, low budget and a system without continuous surveillance. This work proposes a real-time analysis and monitoring system of the main variables that determine the quality of drinking water in an APR, a low-cost system capable of delivering timely information. To achieve this, the main variables that determine the quality of drinking water are addressed, the appropriate sensors, the communication system, programming, obtaining a virtual microbiological sensor based on artificial intelligence, data processing in the cloud and validated the results at the prototype level. The sensors used are pH, conductivity, turbidity, total dissolved solids (TDS), temperature and oxidation reduction potential (ORP). For microbiological analysis, an important and complex factor, the indicated sensors have an unattainable cost for APRs. Here we propose an intelligent virtual sensor based on a fuzzy system to determine possible microbiological contamination, which uses turbidity, ORP, temperature and TDS values &#8203;&#8203;as inputs. Data acquisition is done with the low cost IoT system, an Arduino and a RaspberryPi. Node Red is used for programming, the IMB Cloud platform is used for cloud computing, and Entel's 3G network is used for communication. Finally, a prototype is implemented where the proper functioning of the entire system is checked.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Monitoreo calidad del agua]]></kwd>
<kwd lng="es"><![CDATA[Sensores]]></kwd>
<kwd lng="es"><![CDATA[Internet de las Cosas]]></kwd>
<kwd lng="es"><![CDATA[Sistemas Difusos]]></kwd>
<kwd lng="es"><![CDATA[Nube IBM]]></kwd>
<kwd lng="en"><![CDATA[Water quality monitoring]]></kwd>
<kwd lng="en"><![CDATA[Sensors]]></kwd>
<kwd lng="en"><![CDATA[Internet of Things]]></kwd>
<kwd lng="en"><![CDATA[Fuzzy Systems]]></kwd>
<kwd lng="en"><![CDATA[IBM Cloud]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1.</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Donoso]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Calderón]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Silva]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Informe Final de la Evaluación del Programa de Agua Potable Rural]]></source>
<year>2015</year>
<publisher-loc><![CDATA[Santiago ]]></publisher-loc>
<publisher-name><![CDATA[Ministerio de Obras Públicas-Dirección de Obras Hidráulicas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<label>2.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Højris]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Kornholt]]></surname>
<given-names><![CDATA[SN]]></given-names>
</name>
<name>
<surname><![CDATA[Christensen]]></surname>
<given-names><![CDATA[SCB]]></given-names>
</name>
<name>
<surname><![CDATA[Albrechtsen]]></surname>
<given-names><![CDATA[HJ]]></given-names>
</name>
<name>
<surname><![CDATA[Olesen]]></surname>
<given-names><![CDATA[LS.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Detection of drinking water contamination by an optical real-time bacteria sensor]]></article-title>
<source><![CDATA[H2Open Journal]]></source>
<year>2018</year>
<volume>1</volume>
<page-range>160-8</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3.</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Skovhus]]></surname>
<given-names><![CDATA[TL]]></given-names>
</name>
<name>
<surname><![CDATA[Højris]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
</person-group>
<source><![CDATA[Microbiological Sensors for the Drinking Water Industry]]></source>
<year>2018</year>
<publisher-name><![CDATA[International Water Association]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<label>4.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Clausen]]></surname>
<given-names><![CDATA[CH]]></given-names>
</name>
<name>
<surname><![CDATA[Dimaki]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Bertelsen]]></surname>
<given-names><![CDATA[CV]]></given-names>
</name>
<name>
<surname><![CDATA[Skands]]></surname>
<given-names><![CDATA[GE]]></given-names>
</name>
<name>
<surname><![CDATA[Rodriguez-Trujillo]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Thomsen]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Bacteria detection and differentiation using impedance flow cytometry]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2018</year>
<volume>18</volume>
<publisher-loc><![CDATA[Switzerland ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B5">
<label>5.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hossain]]></surname>
<given-names><![CDATA[SMZ]]></given-names>
</name>
<name>
<surname><![CDATA[Mansour]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Biosensors for on-line water quality monitoring-a review]]></article-title>
<source><![CDATA[Arab Journal of Basic and Applied Sciences]]></source>
<year>2019</year>
<volume>26</volume>
</nlm-citation>
</ref>
<ref id="B6">
<label>6.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yaroshenko]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Kirsanov]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Marjanovic]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Lieberzeit]]></surname>
<given-names><![CDATA[PA]]></given-names>
</name>
<name>
<surname><![CDATA[Korostynska]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Mason]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Real-time water quality monitoring with chemical sensors]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2020</year>
<volume>20</volume>
<publisher-loc><![CDATA[Switzerland ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B7">
<label>7.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Liu]]></surname>
<given-names><![CDATA[Q.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Intelligent water quality monitoring system based on multi-sensor data fusion technology. International]]></article-title>
<source><![CDATA[Journal of Ambient Computing and Intelligence]]></source>
<year>2021</year>
<volume>12</volume>
<page-range>43-63</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chowdury]]></surname>
<given-names><![CDATA[MSU]]></given-names>
</name>
<name>
<surname><![CDATA[Emran]]></surname>
<given-names><![CDATA[T bin]]></given-names>
</name>
<name>
<surname><![CDATA[Ghosh]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Pathak]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Alam]]></surname>
<given-names><![CDATA[MM]]></given-names>
</name>
<name>
<surname><![CDATA[Absar]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[IoT based real-time river water quality monitoring system]]></article-title>
<source><![CDATA[Procedia Computer Science]]></source>
<year>2019</year>
<volume>155</volume>
</nlm-citation>
</ref>
<ref id="B9">
<label>9.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Alam]]></surname>
<given-names><![CDATA[AU]]></given-names>
</name>
<name>
<surname><![CDATA[Clyne]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Deen]]></surname>
<given-names><![CDATA[MJ.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A low-cost multi-parameter water quality monitoring system]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2021</year>
<volume>21</volume>
</nlm-citation>
</ref>
<ref id="B10">
<label>10.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ong]]></surname>
<given-names><![CDATA[NTJ]]></given-names>
</name>
<name>
<surname><![CDATA[Yee]]></surname>
<given-names><![CDATA[SK.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Review on water quality monitoring technologies]]></article-title>
<source><![CDATA[Indonesian Journal of Electrical Engineering and Computer Science]]></source>
<year>2020</year>
<volume>18</volume>
</nlm-citation>
</ref>
<ref id="B11">
<label>11.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Qin]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Alam]]></surname>
<given-names><![CDATA[AU]]></given-names>
</name>
<name>
<surname><![CDATA[Pan]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Howlader]]></surname>
<given-names><![CDATA[MMR]]></given-names>
</name>
<name>
<surname><![CDATA[Ghosh]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Hu]]></surname>
<given-names><![CDATA[NX]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Integrated water quality monitoring system with pH, free chlorine, and temperature sensors]]></article-title>
<source><![CDATA[Sensors and Actuators, B: Chemical]]></source>
<year>2018</year>
<volume>255</volume>
</nlm-citation>
</ref>
<ref id="B12">
<label>12.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Yu]]></surname>
<given-names><![CDATA[HC]]></given-names>
</name>
<name>
<surname><![CDATA[Tsai]]></surname>
<given-names><![CDATA[MY]]></given-names>
</name>
<name>
<surname><![CDATA[Tsai]]></surname>
<given-names><![CDATA[YC]]></given-names>
</name>
<name>
<surname><![CDATA[You]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
<name>
<surname><![CDATA[Cheng]]></surname>
<given-names><![CDATA[CL]]></given-names>
</name>
<name>
<surname><![CDATA[Wang]]></surname>
<given-names><![CDATA[JH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Development of miniaturized water quality monitoring system using wireless communication]]></article-title>
<source><![CDATA[Sensors]]></source>
<year>2019</year>
<volume>19</volume>
<publisher-loc><![CDATA[Switzerland ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B13">
<label>13.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hong]]></surname>
<given-names><![CDATA[WJ]]></given-names>
</name>
<name>
<surname><![CDATA[Shamsuddin]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Abas]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Apong]]></surname>
<given-names><![CDATA[RA]]></given-names>
</name>
<name>
<surname><![CDATA[Masri]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
<name>
<surname><![CDATA[Suhaimi]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality monitoring with arduino based sensors]]></article-title>
<source><![CDATA[Environments - MDPI]]></source>
<year>2021</year>
<volume>8</volume>
</nlm-citation>
</ref>
<ref id="B14">
<label>14.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Olatinwo]]></surname>
<given-names><![CDATA[SO]]></given-names>
</name>
<name>
<surname><![CDATA[Joubert]]></surname>
<given-names><![CDATA[TH.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Enabling Communication Networks for Water Quality Monitoring Applications: A Survey]]></article-title>
<source><![CDATA[IEEE Access]]></source>
<year>2019</year>
<volume>7</volume>
</nlm-citation>
</ref>
<ref id="B15">
<label>15.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[SK]]></given-names>
</name>
<name>
<surname><![CDATA[Sharma]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Mohamed]]></surname>
<given-names><![CDATA[HI]]></given-names>
</name>
<name>
<surname><![CDATA[Khan]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Ahmed]]></surname>
<given-names><![CDATA[SS.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Supervise the physicochemical quality of ground water using soft computing technique]]></article-title>
<source><![CDATA[Environmental Technology]]></source>
<year>2021</year>
<publisher-loc><![CDATA[United Kingdom ]]></publisher-loc>
</nlm-citation>
</ref>
<ref id="B16">
<label>16.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ríos-Tobón]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Agudelo-Cadavid]]></surname>
<given-names><![CDATA[RM]]></given-names>
</name>
<name>
<surname><![CDATA[Gutiérrez-Builes]]></surname>
<given-names><![CDATA[LA.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Patógenos e indicadores microbiológicos de calidad del agua para consumo humano]]></article-title>
<source><![CDATA[Rev. Fac. Nac. Salud Pública]]></source>
<year>2017</year>
<volume>35</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>236-47</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17.</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Obón]]></surname>
<given-names><![CDATA[JM.]]></given-names>
</name>
</person-group>
<source><![CDATA[Análisis microbiológico del agua]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B18">
<label>18.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pule]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Yahya]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Chuma]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Wireless sensor networks: A survey on monitoring water quality]]></article-title>
<source><![CDATA[Journal of Applied Research and Technology]]></source>
<year>2017</year>
<volume>15</volume>
</nlm-citation>
</ref>
<ref id="B19">
<label>19.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Chen]]></surname>
<given-names><![CDATA[Y]]></given-names>
</name>
<name>
<surname><![CDATA[Han]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Water quality monitoring in smart city: A pilot project]]></article-title>
<source><![CDATA[Automation in Construction]]></source>
<year>2018</year>
<volume>89</volume>
<page-range>307-16</page-range></nlm-citation>
</ref>
<ref id="B20">
<label>20.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Raja]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Shanthi]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Periasamy]]></surname>
<given-names><![CDATA[PS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Internet of things based real time water monitoring system]]></article-title>
<source><![CDATA[International Journal of Recent Technology and Engineering]]></source>
<year>2019</year>
<volume>8</volume>
<page-range>1368-72</page-range></nlm-citation>
</ref>
<ref id="B21">
<label>21.</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rajalashmi]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Yugathian]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Monisha]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jeevitha]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[IoT based water quality management system]]></article-title>
<source><![CDATA[Materials Today: Proceedings]]></source>
<year>2021</year>
<volume>45</volume>
<page-range>502-15</page-range><publisher-name><![CDATA[Elsevier Ltd]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
