0102-5473 0102-5473 S0102-54732017000200546 10.5007/2175-795X.2017v35n2p546 Brazil Brazil Brasil 00 06 2017 00 06 2017 35 2 546 559

4 7 7 111-39 114 114 197-223 25 65 65 43-58 29 29 139-52 9 2 2 226-41 5 5 4-63 34 2 2 135-52