2218-3620 2218-3620 S2218-36202020000200442 Ecuador Cuba Cuba 00 06 2020 00 06 2020 12 2 442 446

1998 1988 1987 1972 1975 1983 2010 2018 37 2 2 151-64 2002 2013 7 2017 1963 2000 2009 1962 2000