Dr. Carolyn Crandall, University of California - Los Angeles Health Sciences (image) University of California - Los Angeles Health Sciences Share Print E-Mail Caption Dr. Crandall is the study's principal investigator. Credit Enrique Rivero/UCLA Usage Restrictions For use in reports about this study only. 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.