1. From the Department of Medicine, Division of Pulmonary and Critical Care Medicine, Atlanta Veterans Affairs Medical Center and Emory University School of Medicine, Decatur, GA (R.L.S., A.M.E.-A., C.M.H.); Department of Medicine, Division of Cardiology, Emory University School of Medicine, Atlanta, GA (L.L.H., A.M.A., I.P., A.E.D., S.R.D., J.S.L., G.J., W.R.T., K.K.G., B.L.); and Wallace H. Coulter Department of Biomedical Engineering, Emory University School of Medicine and Georgia Institute of...