1 is a nurse practitioner, is a staff cardiologist, is the operations manager, measurement science QUERI, is an exercise physiologist, and is director of the measurement science QUERI, all at San Francisco VA Healthcare System in California. Dr. Schopfer is assistant professor of medicine, is an assistant professor, is a postdoctoral fellow, and Dr. Whooley is a professor of medicine, all at University of California, San Francisco.