1815-7696 1815-7696 S1815-76962022000401207 Cuba 00 12 2022 00 12 2022 20 4 1207 1218

1999 1993 2020 15 1 1 01-20 2018 6 1 1 33-61 2014 2019 15 55 55 1983 2020 2019 17 3 3 393-408 2017 36 1 1 53-68 2018 9 4 4 227-38