1. Cedars-Sinai Medical Center, Los Angeles, California2RAND Corporation, Santa Monica, California
2. RAND Corporation, Santa Monica, California
3. College of Science, Virginia Polytechnic Institute and State University, Blacksburg
4. Cedars-Sinai Medical Center, Los Angeles, California4Jonathan and Karin Fielding School of Public Health, University of California–Los Angeles, Los Angeles
5. Jonathan and Karin Fielding School of Public Health, University of California–Los Angeles, Los Angeles5VA Greater Los Angeles Healthcare System, Los Angeles, California
6. Cedars-Sinai Medical Center, Los Angeles, California
7. RAND Corporation, Santa Monica, California5VA Greater Los Angeles Healthcare System, Los Angeles, California