2236-3459 2236-3459 S2236-34592017000300120 10.1590/2236-3459/64462 Brazil 00 12 2017 00 12 2017 21 53 120 143

286 92-222 1712-728 99-118 1 161-72 2 281-307 XXIV 139-44 115-47 55 1/2 1/2 197-226 39 1 1 67-87 453-98 13 13 255-358 151-69