0121-7577 0121-7577 S0121-75772021000100017 10.17151/hpsal.2021.26.1.3 Colombia Colombia 00 01 2021 00 01 2021 26 1 17 19 1 2009 32 5 5 399-404 2 2019 51 3 3 194-6 3 2020 87 40-8 4 2020 290 5 2020 12 5 5 550-2 6 2020 7 2020