1. James A. Town, MD, is Clinical Instructor, Division of Pulmonary and Critical Care, Department of Medicine, University of Washington, Seattle; Paul A. Bergl, MD, is Assistant Professor, Division of General Internal Medicine, Medical College of Wisconsin; Akhil Narang, MD, is a Fellow, Section of Cardiology, Department of Medicine, University of Chicago Medicine; and John F. McConville, MD, is Ass