| Affiliation: | 1. Department of Obstetrics and Gynecology, Health Sciences North, Sudbury, Canada;2. Department of Obstetrics and Gynecology, St. Michael's Hospital and University of Toronto, Toronto, Canada;3. Department of Clinical Pathology, Sunnybrook Health Sciences Centre, Toronto, Canada;4. Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Canada;5. Department of Anesthesia, Sunnybrook Health Sciences Centre and University of Toronto, Toronto, Canada;6. Department of Medicine, University of Toronto, Toronto, Canada |
