Medical Student at UT Southwestern (IMAGE) UT Southwestern Medical Center Caption Karen DeSalvo, M.D., M.P.H., M.Sc., Acting Assistant Secretary for Health, and Tyler Smith, fourth-year medical student at UT Southwestern. Credit UT Southwestern 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.