1. Nuffield Department of Obstetrics & Gynaecology and Oxford Maternal & Perinatal Health Institute; Green Templeton College; University of Oxford; Oxford UK
2. Programa de Pós-Graduação em Epidemiologia; Universidade Federal de Pelotas; Pelotas Brazil
3. Programa de Pós-Graduação em Saúde e Comportamento; Universidade Católica de Pelotas; Pelotas RS Brazil
4. Global Alliance to Prevent Prematurity and Stillbirth (GAPPS); Seattle WA USA
5. Dipartimento di Scienze della Sanità Pubblica e Pediatriche; Università degli Studi di Torino; Torino Italy
6. Nagpur INTERGROWTH-21 Research Centre; Ketkar Hospital; Nagpur India
7. Center for Perinatal Studies; Swedish Medical Center; Seattle WA USA
8. School of Public Health; Peking University; Beijing China
9. Faculty of Health Sciences; Aga Khan University; Nairobi Kenya
10. Department of Family & Community Health; Ministry of Health; Muscat Oman
11. Centre for Statistics in Medicine; Nuffield Department of Orthopaedics, Rheumatology & Musculoskeletal Sciences; University of Oxford; Oxford UK
12. Department of Engineering Science; University of Oxford; Oxford UK
13. Division of Women & Child Health; The Aga Khan University; Karachi Pakistan
14. Center for Global Health for Sick Children; Toronto ON Canada