[1] US Dept Vet Affairs, Dev Ctr Innovat Implementat, VA Hlth Serv Res, VA Palo Alto Hlth Care Syst, Palo Alto, CA USA
[2] Stanford Univ, Sch Med, Dept Neurosurg, Stanford, CA USA
[3] Stanford Univ, Sch Med, Dept Primary Care & Populat Hlth, Stanford, CA USA
[4] Stanford Univ, Sch Med, Quantitat Sci Unit, Stanford, CA USA
[5] Stanford Univ, Sch Med, Evaluat Sci Unit, Stanford, CA USA
[6] Stanford Univ, Dept Epidemiol & Populat Hlth, Stanford, CA USA
[7] Stanford Hlth Care, Off Res Patient Care Serv, Palo Alto, CA USA
[8] Stanford Univ, S SPIRE Ctr, Sch Med, Dept Surg, Palo Alto, CA USA
[9] US Dept Vet Affairs, Vet Affairs Palo Alto Hlth Care Syst, Palo Alto, CA USA
[10] Lebanon VA Med Ctr, US Dept Vet Affairs, Lebanon, PA USA
[11] Penn State Coll Med, Hershey, PA USA
[12] VA Palo Alto Hlth Care Syst, 3801 Miranda Ave, Palo Alto, CA 94304 USA