0252-8584 0252-8584 S0252-85842020000100006 Cuba 00 06 2020 00 06 2020 163 1

2018 2-3 2019 2 2013 74 74 30-7 2019 febrero La Habana 2018 8 2019 2018 2 2018 4 2018 a 8 2018 b 6 2018 c 4-5 2018 2019 2