[1] Stanford Univ, Ctr Digital Hlth, Stanford, CA USA
[2] Stanford Univ, Sch Med, Dept Dermatol, 269 Campus Dr,CCSR 4325, Stanford, CA 94305 USA
[3] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA USA
[4] Stanford Univ, Dept Psychiat & Behav Sci, Stanford, CA USA
[5] Vet Affairs Palo Alto Hlth Care Syst, Sierra Pacific Mental Illness Res Educ & Clin Ctr, Palo Alto, CA USA
[6] Stanford Univ, Sch Med, Dept Epidemiol & Populat Hlth, Stanford, CA USA
[7] Stanford Univ, Sch Med, Dept Med, 269 Campus Dr,CCSR 4325, Stanford, CA 94305 USA
[8] Stanford Univ, Stanford Canc Inst, Sch Med, Stanford, CA USA
[9] Stanford Univ, Sch Med, Dept Surg, Stanford, CA USA
[10] Stanford Univ, Stanford Surg Policy Improvement Res & Educ Ctr, Stanford, CA USA