2177-6059 2177-6059 S2177-60592017000300587 10.18593/r.v42i3.13741 Brasil Brazil Brazil 00 12 2017 00 12 2017 42 3 587 612

18 4 4 816-23 6 11 11 64-77 2 27 1 1 50 50 57-60 14 1 1 50 40-52