Stefan Gravenstein, Case Medical Center (IMAGE) University Hospitals Cleveland Medical Center Caption This is Stefan Gravenstein, MD, Interim Chief of the Division of Geriatrics at University Hospitals Case Medical Center and Professor of Medicine, Case Western Reserve University School of Medicine. Credit University Hospitals Usage Restrictions Use only with home coaching study. 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.