[1] RAND,Center for Healthcare Provider Behavior, Veterans Health Administration
[2] Greater Los Angeles Health Care System,Department of Psychiatry and Biobehavioral Sciences
[3] UCLA Neuropsychiatric Institute and Hospital,Department of Medicine
[4] UCLA School of Medicine,Division of Research
[5] University of Arkansas for Medical Sciences,undefined
[6] Johns Hopkins Medical Institutions,undefined
[7] Kaiser Permanente Medical Care Program-Northern California,undefined
[8] Ambulatory Sentinal Practice Network,undefined