0872-671X 0872-671X S0872-671X2021000300052 10.24950/i/60/21/3/2021 Portugal Portugal Portugal 30 09 2021 30 09 2021 28 3 52 53 1 1998 351 509-13 2 2018 13 837-8 3 2015 22 4 2012 18 584-91