1. Oregon Regional Primate Research Center (R.D.M., K.M., M.A., M.N., K.H.), Portland, Oregon 97201;
2. the Department of Obstetrics and Gynecology, Women and Children’s Hospital, University of Southern California (F.Z.S.), Los Angeles, California 90033
3. The Dotter Interventional Institute (B.U.), Oregon Health Sciences University, Portland, Oregon 97201;
4. Obstetrics and Gynecology (M.N.), Portland, Oregon 97201;
5. Departments of Medicine (K.H.), Portland, Oregon 97201;
6. Cell and Developmental Biology (K.H.), Portland, Oregon 97201;