1. Medicine University of British Columbia Vancouver BC Canada
2. Obstetrics and Gynaecology University of British Columbia Vancouver BC Canada
3. School of Population and Public Health University of British Columbia Vancouver BC Canada
4. Centre for Health Evaluation and Outcome Sciences (CHÉOS) Providence Health Care Research Institute UBC Vancouver BC Canada
5. Medicine and Obstetrics and Gynaecology University of Montreal Montreal QC Canada
6. Obstetrics and Gynaecology University of Alberta Edmonton AB Canada
7. Paediatrics University of Toronto Toronto ON Canada
8. Obstetrics and Gynaecology University of Toronto Toronto ON Canada
9. The Centre for Mother, Infant and Child Research Sunnybrook Research Institute University of Toronto Toronto ON Canada
10. Clinical Epidemiology and Biostatistics McMaster University Hamilton ON Canada
11. Obstetrics and Gynaecology University of Ottawa Ottawa ON Canada
12. Obstetrics and Gynaecology University of Manitoba Winnipeg MB Canada
13. Obstetrics and Gynaecology McMaster University Hamilton ON Canada
14. Medicine University of Toronto Toronto ON Canada
15. Obstetrics and Gynaecology University of Amsterdam Amsterdam the Netherlands
16. Obstetrics and Gynaecology Derriford Hospital Devon UK
17. Obstetrics and Gynaecology University of Nottingham Nottingham UK
18. Obstetrics and Gynaecology Universite de Sherbrooke Sherbrooke QC Canada