1. a Community Health Systems , University of California , San Francisco , CA , USA
2. b College of Nursing, Rutgers , The State University of New Jersey , Newark , NJ , USA
3. c Department of Medicine , University of California , San Francisco , CA , USA
4. d Department of Internal Medicine, Positive Health Program , University of California , San Francisco , CA , USA
5. e School of Nursing , University of California , San Francisco , CA , USA