[1] Univ Calif Irvine Hlth, Epidemiol & Infect Prevent, Orange, CA USA
[2] Univ Calif Irvine, Sch Med, Div Infect Dis, Irvine, CA 92717 USA
[3] Univ Calif Irvine, Sch Med, Hlth Policy Res Inst, Irvine, CA 92717 USA
[4] Univ Nevada, Renown Hlth, Reno Sch Med, Reno, NV 89557 USA
[5] Univ Calif Irvine, Sch Med, Dept Med, Irvine, CA 92717 USA
[6] Univ Calif Irvine, Sch Med, Dept Emergency Med, Irvine, CA 92717 USA
[7] Univ Calif Irvine, Sch Med, Hlth Affairs Informat Serv, Irvine, CA 92717 USA
[8] Univ Calif Irvine, Sch Med, Div Gastroenterol, Irvine, CA 92717 USA
[9] Univ Calif Irvine, Sch Med, Dept Anesthesiol, Irvine, CA 92717 USA
[10] Univ Calif Irvine, Sch Med, Dept Surg, Irvine, CA 92717 USA
[11] Univ Calif Irvine, Sch Med, Dept Pathol, Irvine, CA 92717 USA