1. Department of Obstetrics and Gynecology; Mayo Clinic; Rochester MN USA
2. Department of Obstetrics and Gynecology; Baylor College of Medicine; Houston TX USA
3. Center for Medical Ethics and Health Policy; Baylor College of Medicine; Houston TX USA
4. Department of Molecular and Human Genetics; Baylor College of Medicine; Houston TX USA
5. Department of Obstetrics, Gynecology and Women's Health; Saint Louis University School of Medicine; St Louis MO USA