1. School of Epidemiology and Public HealthUniversity of Ottawa Ottawa Ontario Canada
2. Clinical Epidemiology ProgramOttawa Hospital Research Institute Ottawa Ontario Canada
3. Karolinska Institutet Stockholm Sweden
4. Université du Québec en Abitibi‐Témiscamingue (UQAT) Québec Canada
5. Division of General Obstetrics and GynecologyUniversity of Ottawa Ottawa Ontario Canada