Instituto do Cancer do Estado de São Paulo, São Paulo, Brazil
Instituto da Criança, Hospital das Clínicas da FMUSP, São Paulo, Brazil
Cancer Institute of the State of São Paulo, Sao Paulo, Brazil
University of Sao Paulo, Sao Paulo, Brazil
Cristina Silva Sousa, Sao Paulo, Brazil
Post Graduate Program of Maternal and Child Health, Sao Luis, Maranhao, Brazil
University Hospital of sao paulo, São Paulo, Brazil
Samaritan Hospital, São Paulo, Brazil
Faculdade de Medicina de Botucatu, Botucatu, São Paulo, Brazil
Hospital Municipal Carmino Caricchio, Sao Paulo, Brazil