0104-4060 0104-4060 S0104-40602018000500009 10.1590/0104-4060.62549 Brazil Brazil 00 09 2018 00 09 2018 34 71 09 18 30 30 267-81 26 93 93 1341-362 20 1 1 74-80 32 4 4 73-95