Lewis J. Rubin, MD, FACP, FCCP, FAHA, FRCP, is Emeritus Professor of Medicine at the University of California in San Diego, School of Medicine and its emeritus director of Pulmonary and Critical Care. Professor Rubin earned his medical degree from the Albert Einstein College of Medicine, New York, and completed a residency and fellowship at Duke University Medical Center. He has been involved in the basic and clinical investigation of pulmonary vascular diseases for more than 30 years. He has authored of over 200 peer-reviewed publications and 70 book chapters, and edited six books on the pulmonary circulation. He has served as Principal Investigator/Steering Committee Chair or Member for the pivotal trials of most of the currently approved medical therapies. He has received numerous honors and awards, including an Honorary Fellowship by the Royal College of Physicians, United Kingdom, the Dickinson Richards Award from the American Heart Association, and the Simon Dack Award from the American College of Cardiology.