1676-2592 1676-2592 S1676-25922015000200289 10.2592/EDT17N2A20150005 Brazil Brazil 00 05 2015 00 05 2015 17 2 289 307

3 2 2 83-99 4 02 02 19-29 12 12 207-18 17 3 3 90-106 9 1 1 16-50 2 38 38 91-107