1 Department of Medicine, Baylor College of Medicine, Houston, Texas; Section of Cardiovascular Research, Baylor College of Medicine, Houston, Texas.
2 Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota.
3 Keele Cardiovascular Research Group, Centre for Prognosis Research, Keele University, Stoke-on-Trent, United Kingdom.
4 Department of Medicine, Duke University Medical Center, Durham, North Carolina; Department of Medicine, Duke Clinical Research Institute, Durham, North Carolina.
5 Aga Khan University, Karachi, Pakistan; Baylor College of Medicine and Texas Heart Institute, Houston, Texas.
6 Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois.
7 Department of Medicine, Baylor College of Medicine, Houston, Texas; Department of Medicine, Section of Cardiology, Baylor College of Medicine, Houston, Texas.
8 Division of Cardiology, Department of Medicine, Loma Linda University Medical Center, Loma Linda, California. Electronic address: [email protected].