[1] VA Palo Alto Hlth Care Syst, Hlth Econ Resource Ctr, 795 Willow Rd 152 MPD, Menlo Pk, CA 94025 USA
[2] VA Palo Alto Hlth Care Syst, Ctr Innovat Implementat, Menlo Pk, CA USA
[3] UCSF Sch Med, Dept Gen Internal Med, San Francisco, CA USA
[4] Stanford Univ, Sch Med, Dept Pediat, Stanford, CA USA
[5] Stanford Univ, Sch Med, Dept Hlth Policy, Stanford, CA USA
[6] VA Greater Angeles Healthcare Syst, VA Ctr Study Healthcare Innovat Implementat & Poli, Los Angeles, CA USA
[7] VA Greater Angeles Healthcare Syst, Dept Med, Los Angeles, CA USA
[8] Univ Calif Los Angeles, David Geffen Sch Med, Dept Med, Los Angeles, CA USA
[9] VA Salt Lake City Hlth Care Syst, Informat Decis Enhancement & Analyt Sci Ctr, Salt Lake City, UT USA
[10] Univ Utah, Sch Med, Dept Internal Med, Div Epidemiol, Salt Lake City, UT USA
[11] Univ Utah, Sch Med, Dept Populat Hlth Sci, Div Hlth Syst Innovat & Res, Salt Lake City, UT USA
[12] Stanford Univ, Sch Med Pulm & Crit Care Med, Stanford, CA USA