1. Clinical Epidemiology Program, Ottawa Hospital Research Institute, Ottawa, Canada
2. Faculty of Medicine, University of Ottawa, Ottawa, Canada
3. Cancer Therapeutics Program, Ottawa Hospital Research Institute, Ottawa, Canada
4. Cancer Program, The Ottawa Hospital, Ottawa, Canada
5. Division of Medical Oncology, University of Ottawa, Ottawa, Canada
6. Department of Obstetrics, Gynecology and Newborn Care, The Ottawa Hospital, Ottawa, Canada
7. Department of Obstetrics and Gynecology, University of Ottawa, Ottawa, Canada
8. School of Epidemiology and Public Health, University of Ottawa, Ottawa, Ontario, Canada