[1] Ventura Cty Med Ctr, 300 Hillmont Ave, Ventura, CA 93003 USA
[2] Univ Southern Calif, Keck Sch Med, Div Infect Dis, 2020 Zonal Ave,IRD Room 436, Los Angeles, CA 90033 USA
[3] Kaiser Permanente Southern Calif, 9333 Imperial Highway, Downey, CA 90242 USA
[4] Univ Southern Calif, Keck Sch Med, SSB 202Y 2001 N Soto St, Los Angeles, CA 90033 USA
[5] Univ Southern Calif, Keck Sch Med, Div Gastroenterol, 1520 San Pablo Suite 1000, Los Angeles, CA 90033 USA