1726-6718 1726-6718 S1726-67182021000100012 Bolivia Cuba Bolivia Ecuador 00 04 2021 00 04 2021 20 1 1 2020 19 3 3 2 2015 4 13 13 50-1 3 2021 40 1 1 4 2020 34 2 2 5 2014 472 1 1 370-6 6 2013 35 140 140 28-47