1 Department of Medicine, Kaiser Permanente Oakland Medical Center, Oakland, California.
2 Division of Research, Kaiser Permanente Northern California, Oakland, California.
3 Cedars-Sinai Smidt Heart Institute, Los Angeles, California.
4 Department of Medicine, The Aga Khan University, Karachi, Pakistan; Texas Heart Institute, Houston, Texas.
5 Division of Research, Kaiser Permanente Northern California, Oakland, California; Department of Cardiology, The Permanente Medical Group. Oakland, California. Electronic address: [email protected].