1 Department of Medicine, Kaiser Permanente Oakland Medical Center, Oakland, California.
2 Division of Research, Kaiser Permanente Northern California, Oakland, California; Graduate Medical Education, Kaiser Permanente Oakland Medical Center, Oakland, California; The Permanente Medical Group, Oakland, California.
3 Graduate Medical Education, Kaiser Permanente Oakland Medical Center, Oakland, California.
4 Division of Research, Kaiser Permanente Northern California, Oakland, California; The Permanente Medical Group, Oakland, California; Department of Cardiology, Kaiser Permanente Oakland Medical Center, Oakland, California.
5 Division of Research, Kaiser Permanente Northern California, Oakland, California; The Permanente Medical Group, Oakland, California. Electronic address: nancy.gordon@kp.org.