Joseph G. Murphy, MD, has been on staff at Mayo Clinic for over 30 years. He is a Consultant in the Department of Cardiovascular Medicine, specializing in the areas of pulmonary hypertension, valvular heart disease, and hospital coronary care. He holds the academic rank of Professor of Medicine in the College of Medicine, Mayo Clinic. He has been editor of Mayo Clinic Cardiology from its inception and is author of over 50 peer-reviewed journal articles and nearly 100 book chapters. Nandan S. Anavekar, M.B., B.Ch, is a Professor of Medicine and a consultant in the Cardiovascular Department and Radiology Department at Mayo Clinic. His main clinical interest is the management of diseases of the pericardium, diseases of the aorta cardiac infections, as well as critical care cardiology. He is author of over 200 journal publications.