2224-7920 2224-7920 S2224-79202019000300029 Cuba 00 12 2019 00 12 2019 31 3 29 33 AOAC 1995 2001 36 9 9 1671-88 2005 67 1 1 1495-513 2018 2013 2016 65 1 1 24-30 2018