1. Division of Endocrinology, Diabetes, & Metabolism, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, USA
2. Division of General Internal Medicine & Health Services Research, Department of Medicine, David Geffen School of Medicine, University of California, Los Angeles, California, USA
3. VA Greater Los Angeles Healthcare System, Los Angeles, California, USA
4. Department of Health Policy and Management, Fielding School of Public Health, University of California, Los Angeles, California, USA
5. HSR&D Center for the Study of Healthcare Innovation, Implementation & Policy, VA Greater Los Angeles Healthcare System, Los Angeles, California, USA