1414-4077 1414-4077 S1414-40772017000300817 10.1590/S1414-40772017000300013 Brazil 00 12 2017 00 12 2017 22 3 817 832

2 131-52 2 413-33 377-414 1 407-12 1 14 14 1-17 89-101 28 28 107-27 2 15-30 48 48 11-32 São José, Porto Rico WORLD BANK WORLD BANK