2178-4612 2178-4612 S2178-46122018000100114 10.18226/21784612.v23.n1.7 Brazil Brazil 00 04 2018 00 04 2018 23 1 114 136

2 67-79 2 2 189-206 1 1 21-30 28 99 99 542-57 22 22 131-49 26 64 64 3-27