Caroline M. Tanner, M.D., Ph.D., is director of clinical research at The Parkinson's Institute in Sunnyvale, California. She is also a clinical lecturer in the Department of Health Research and Policy at Stanford University. She earned her medical degree at Loyola University and her doctorate from the University of California at Berkeley. Her many memberships in medical societies include the Movement Disorder Society and American Society for Experimental Therapeutics (both as a founding member). Dr. Tanner serves on the editorial board of the journal Neuroepidemiology and on the Scientific Advisory Board of the Michael J. Fox Foundation.