Affiliation: | 1. Partnership for Health Analytic Research, Beverly Hills, CA, USA;2. Rutgers Biomedical and Health Sciences, Newark, NJ, USA;3. Weill Cornell Medical College, Department of Healthcare Policy and Research, New York, New York, USA;4. American Medical Group Association, Alexandria, VA, USA;5. DaVita Clinical Research, Minneapolis, MN, USA;6. DaVita HealthCare Partners, Denver, CO, USA |