1. Division of Cardiovascular Medicine (V.A., E.K., K.T.M., D.F.M., K.M., Y.R.S., D.K.G.), Department of Medicine, Vanderbilt University Medical Center, Nashville, TN.
2. Tennessee Valley Healthcare System Nashville Veteran Affairs Hospital (V.A., D.F.M.).
3. Division of Pulmonary, Allergy, and Critical Care (J.A.K., J.J.G., C.S.M., T.B., M.H.T., S.G., E.J.C., J.D.W., A.R.H., N.L.F.), Department of Medicine, Vanderbilt University Medical Center, Nashville, TN.
4. Division of Clinical Pharmacology (M.B.M., K.T.M., K.T.M.), Department of Medicine, Vanderbilt University Medical Center, Nashville, TN.