1. Department of Medicine and Center for Faculty Educators, School of Medicine, University of California, San Francisco, CA, USA
2. Center for Faculty Educators, School of Medicine, University of California, San Francisco, CA, USA
3. Occupational Health Services, The Permanente Medical Group, South San Francisco, CA, USA
4. Departments of Epidemiology and Biostatistics and Pediatrics, School of Medicine, University of California, San Francisco, CA, USA
5. Department of Anesthesia, School of Medicine, University of California, San Francisco, CA, USA