Gregory S. Thomas, MD, MPH, medical director for the MemorialCare Heart & Vascular Institute at MemorialCare Long Beach Medical Center in California and clinical professor at University of California, Irvine. He is author or coauthor of more than 200 scientific papers that have appeared in leading medical journals including JAMA, The Lancet, Journal of the American College of Cardiology, International Journal of Cardiology and Atherosclerosis.