Low serum levels of 25-hydroxyvitamin D (25-OHD) in children with autism - Tostes, Márcia Helena Fávero de Souza; Polonini, Hudson Caetano; Gattaz, Wagner Farid; Raposo, Nádia Rezende Barbosa; Baptista, Edilene Bolutari (Trends in Psychiatry and Psychotherapy, 2012)