1. Faculty of Medicine; University of British Columbia; Vancouver BC Canada
2. Women's Health Research Institute, BC Women's Hospital; Vancouver BC Canada
3. Department of Health Policy and Management, Center for Health Decision Science; Harvard T.H. Chan School of Public Health; Boston MA
4. Department of Obstetrics and Gynecology; University of British Columbia; Vancouver BC Canada
5. Department of Obstetrics and Gynecology; Makerere University/Mulago National Referral Hospital; Kampala Uganda
6. Centre for Clinical Epidemiology and Evaluation; Vancouver Coastal Health Research Institute; Vancouver BC Canada