1. Department of Obstetrics and Gynecology, University of Alberta, Edmonton, Canada (T.S., R.K., A.Q., F.S., S.T.D.).
2. Women and Children’s Health Research Institute, University of Alberta, Edmonton, Canada (T.S., R.K., A.Q., F.S., S.T.D.).
3. Department of Physiology, University of Alberta, Edmonton, Canada (A.P., S.T.D.).