Charles Nager, MD, University of California San Diego School of Medicine (image) University of California - San Diego Share Print E-Mail Caption Charles Nager, MD, lead author of the study and chair of the Department of Obstetrics, Gynecology and Reproductive Sciences at UC San Diego School of Medicine. Credit UC San Diego Health Sciences Usage Restrictions Caption and credit as indicated. Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.