1. Division of Cardiology (Z.M., X.X., S.R.), Duke University Medical Center, Durham, NC.
2. Division of Pulmonary and Critical Care (Y.-R.Y., C.A.P.), Duke University Medical Center, Durham, NC.
3. Department of Radiology (C.T.B.), Duke University Medical Center, Durham, NC.
4. Department of Medicine (J.J.K.), Duke University Medical Center, Durham, NC.
5. Lerner Research Institute, Cleveland Clinic, OH (S.C.). The current address for Dr Kovacs is MD Anderson Cancer Center Institute for Applied Cancer Science and Center for Co-Clinical Trials, Houston, TX.
6. Department of Biochemistry (S.R.), Duke University Medical Center, Durham, NC.