1676-2592 1676-2592 S1676-25922017000500795 10.20396/etd.v19i4.8646395 Brazil Brazil 00 12 2017 00 12 2017 19 4 795 807

8 107-15 22 3 3 55-68 18 52 52 122-33 8 1 1 15-38 1 66 66 60-92 1 2 2