1. Department of Physiology (K.S.), Second Military Medical University, Shanghai 200433, China
2. Departments of Obstetrics and Gynecology (R.M., X.C., B.C., R.W., D.B., L.M.), Cincinnati, Ohio 45267
3. Molecular and Cellular Physiology (B.C., L.M.), University of Cincinnati, College of Medicine, Cincinnati, Ohio 45267