1. VA Health Services Research and Development (HSR&D) Center for the Study of Healthcare Innovation, Implementation, and Policy, VA Greater Los Angeles Healthcare System, Los Angeles, California
2. Department of Medicine, VA Greater Los Angeles Healthcare System, Los Angeles, California
3. Department of Medicine, Geffen School of Medicine at the University of California Los Angeles (UCLA), Los Angeles, California
4. Department of Health Policy and Management, UCLA School of Public Health, Los Angeles, California