Atul C. Mehta, MD, FACP, FCCP Professor of Medicine, Lerner College of Medicine Buoncore Family Endowed Chair in Lung Transplantation Staff, Department of Pulmonary Medicine Respiratory Institute, Cleveland Clinic Cleveland, OH, USA and Senior Editor Journal of Bronchology & Interventional Pulmonology Prasoon Jain, MBBS, MD, FCCP Pulmonary and Critical Care Louis A Johnson VA Medical Center Clarksburg, WV, USA Thomas R. Gildea, MD, MS, FCCP, FACP Pulmonary, Allergy, Critical Care Medicine and Transplant Center Respiratory Institute Cleveland Clinic Cleveland, OH, USA