1. Escola Paulista de Enfermagem, Universidade Federal de São Paulo, São Paulo, Brazil.
2. Department of Preventive Medicine, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, Brazil.
3. Florence Nightingale Faculty of Nursing, Midwifery and Palliative Care, King's College London, London, United Kingdom.
4. Judith Lumley Centre, La Trobe University, Victoria, Australia.
5. Breastfeeding Service, Royal Women's Hospital, Victoria, Australia.
6. Obstetrics and Gynecology, Geffen School of Medicine at UCLA, Los Angeles, California, USA.