1517-9702 1517-9702 S1517-97022019000100100 10.1590/s1517-970220194501001 Brasil 00 00 2019 00 00 2019 45 2002 1996 2016 15 2 2 165-85 2017 25 97 97 1032-44 2018 44 2014 40 2 2 325-46