1. Center for Healthcare Value, University of California, San Francisco (UCSF)2Philip R. Lee Institute for Health Policy Studies, UCSF
2. Center for Healthcare Value, University of California, San Francisco (UCSF)2Philip R. Lee Institute for Health Policy Studies, UCSF3Department of Neurosurgery, UCSF
3. Center for Healthcare Value, University of California, San Francisco (UCSF)2Philip R. Lee Institute for Health Policy Studies, UCSF4Department of Medicine, UC (University of California) Berkeley–UCSF Joint Medical Program
4. Center for Healthcare Value, University of California, San Francisco (UCSF)2Philip R. Lee Institute for Health Policy Studies, UCSF5Department of Pediatrics, UCSF
5. Philip R. Lee Institute for Health Policy Studies, UCSF6Department of Medicine, UCSF
6. Department of Medicine, UCSF7Department of Emergency Medicine, UCSF
7. Center for Healthcare Value, University of California, San Francisco (UCSF)2Philip R. Lee Institute for Health Policy Studies, UCSF6Department of Medicine, UCSF
8. Philip R. Lee Institute for Health Policy Studies, UCSF7Department of Emergency Medicine, UCSF
9. Department of Health Care Policy, Harvard Medical School, Boston, Massachusetts
10. Center for Healthcare Value, University of California, San Francisco (UCSF)2Philip R. Lee Institute for Health Policy Studies, UCSF6Department of Medicine, UCSF9Department of Epidemiology and Biostatistics, UCSF