1. School of Arts Sciences and Humanities of University of Sao Paulo; Sao Paulo Brazil
2. Department of Maternal Child and Psychiatric Nursing; School of Nursing, University of Sao Paulo; Sao Paulo Brazil
3. Midwifery Programme, School of Arts, Sciences and Humanities, Public Health Graduate Program; University of Sao Paulo; Sao Paulo Brazil
4. Laboratory of Radiation Dosimetry and Medical Physics, Institute of Physics; University of Sao Paulo; Sao Paulo Brazil
5. Medical School Clinical Epidemiology Unit, Heart Institute (InCor); University of Sao Paulo; Sao Paulo Brazil