[1] Univ Chicago Biol Sci, Dept Publ Hlth Sci, Chicago, IL USA
[2] Univ Calif Irvine, Dept Med Publ Hlth & Nursing, Informat Technol Enhancing Qual Care iTEQC Res Pro, Irvine, CA USA
[3] Univ Calif Los Angeles, Borun Ctr, Vet Adm, Geriatr Res Educ & Clin Ctr, Los Angeles, CA USA
[4] RAND, Santa Monica, CA USA
[5] Univ Calif Irvine, Dept Med, ITEQC Res Program, Div Gen Internal Med, Irvine, CA USA
[6] Univ Chicago Biol Sci, Dept Publ Hlth Sci, Dept Med, Chicago, IL USA
[7] Univ Chicago Biol Sci, Dept Publ Hlth Sci, 5841 S Maryland Ave,Room 214, Chicago, IL 60637 USA