1. Department of Biostatistics and Epidemiology, Cleveland Clinic Foundation, Cleveland, Ohio; Department of Pulmonary and Critical Care Medicine, Cleveland Clinic Foundation, Cleveland, Ohio; Department of Pulmonary and Critical Care Medicine, Oregon Health Sciences University, Portland, Oregon; Division of Pulmonary and Critical Care Medicine, The New York Hospital/Cornell University, New York, New York; Pulmonary Division, Department of Medicine, University of North Carolina, Chapel Hill, North...