1. Department of Medicine
2. Department of Pathology and Laboratory Medicine, University of British Columbia
3. Women's Health Research Institute, British Columbia Women's Hospita
4. Oak Tree Clinic, British Columbia Women's Hospital
5. Centre for Menstrual Cycle and Ovulation Research
6. Division of Endocrinology, Department of Medicine
7. School of Population and Public Health, University of British Columbia, Vancouver, Canada.
8. Division of Infectious Disease, Department of Medicine