Mark Helfand, OHSU School of Medicine (IMAGE) Oregon Health & Science University Caption Mark Helfand, M.D., M.S., M.P.H., professor of medicine and medical informatics and clinical epidemiology at the OHSU School of Medicine, is co-author of a study in the April 1 edition of the Annals of Internal Medicine. Credit Oregon Health & Science University Usage Restrictions None License Licensed content 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.