Socioeconomic diversities and infant development at 6 to 9 months in a poverty area of São Paulo, Brazil - Tella, Patricia; Piccolo, Luciane da Rosa; Rangel, Mayra Lemus; Rohde, Luis Augusto; Polanczyk, Guilherme Vanoni; Miguel, Euripides Constantino; Grisi, Sandra Josefina Ferraz Ellero; Fleitlich-bilyk, Bacy; Ferraro, Alexandre Archanjo (Trends in psychiatry and psychotherapy, 2018)