[1] Univ Calif San Francisco, Div Adolescent & Young Adult Med, Dept Pediat, 3333 Calif St,Suite 245,Box 0503, San Francisco, CA 94143 USA
[2] Kaiser Permanente Northern Calif, Pediat Residency Program, Oakland, CA USA
[3] Kaiser Permanente, Div Res, Oakland, CA USA
[4] Kaiser Permanente, Dept Grad Med Educ, Oakland, CA USA
[5] Kaiser Permanente Northern Calif, Div Adolescent Med, Permanente Med Grp, San Leandro, CA USA