0102-4698 0102-4698 S0102-46982021000100801 10.1590/0102-46982000037 Brazil Brazil 00 00 2021 00 00 2021 37 2012 48 3 3 108-22 2000 2. ed. 141-69 2000 2. ed. 31-61 1999 2000 2. ed. 111-40