[1] Stanford Hlth Care, Dept Res & Hlth Equ, 301 Ravenswood Ave, Menlo Pk, CA 94025 USA
[2] Stanford Univ, Sch Med, Dept Med, Div Primary Care & Populat Hlth, Palo Alto, CA USA
[3] Stanford Univ, Dept Med, Nursing Res Sect, Sch Med, Palo Alto, CA USA
[4] Sonoma State Univ, Dept Nursing, Rohnert Pk, CA USA
[5] Univ North Carolina Chapel Hill, Sch Nursing, Chapel Hill, NC USA
[6] Duke Univ, Sch Nursing, Durham, NC USA
[7] Calif State Univ, Dept Nursing, Hayward, CA USA
[8] Stanford Hlth Care, Execut Adm, Palo Alto, CA USA