1. Department of Obstetrics and Gynaecology University of Campinas (UNICAMP), School of Medical Sciences, Cidade Universitaria Campinas SP Brazil
2. Department of Women and Children’s Health, School of Life Course Sciences Faculty of Life Sciences and Medicine, King’s College London, Women’s Health Academic Centre KHP, St. Thomas’ Hospital London UK
3. Unit of Statistics, School of Medical Sciences University of Campinas (UNICAMP) Campinas SP Brazil
4. Fernandes Figueira Institute, Oswaldo Cruz Foundation/FIOCRUZ Rio de Janeiro Brazil
5. Reproduction and Perinatal Centre, Faculty of Medicine and Health University of Sydney Sydney New South Wales Australia