[1] Univ Calif Los Angeles, David Geffen Sch Med, Div Gen Internal Med & Hlth Serv Res, Los Angeles, CA 90024 USA
[2] Univ Calif Los Angeles, David Geffen Sch Med, Dept Pathol, Los Angeles, CA 90024 USA
[3] Univ Calif Los Angeles, David Geffen Sch Med, Ctr Patient Safety, Los Angeles, CA 90024 USA
[4] Univ Calif Irvine, Dept Med, Irvine, CA 92717 USA
[5] Univ Calif San Diego, Dept Med, La Jolla, CA 92093 USA
[6] Univ Calif Davis, Dept Med, Davis, CA 95616 USA
[7] Univ Ottawa, Ottawa Hlth Res Inst, Ottawa, ON K1N 6N5, Canada
[8] Univ Calif Los Angeles, Sch Publ Hlth, Dept Community Hlth Sci, Los Angeles, CA 90024 USA
[9] Univ Calif Los Angeles, Healthcare Eth Ctr, Los Angeles, CA USA