1817-7433 1817-7433 S1817-74332022000200094 10.51581/rccm.v25i2.506 Bolivia Bolivia Bolivia 00 00 2022 00 00 2022 25 2 94 95 1 2022 28 1 1 75-80 2 2022 3 2021 35 3 3 144-7 4 2022 7 4 4 1038-56 5 2021 81 4 4 622-4 6 2020 58 2 2 197-201