2215-3411 2215-3411 S2215-34112020000300019 10.15517/ijds.2020.42381 Chile 00 12 2020 00 12 2020 22 3 19 21 2020 19-21 2015 10 1 1 31-7 2020 22 2 2 11-3 2020 11-3