[1] Univ Calif Davis, Ctr Healthcare Policy & Res, Sacramento, CA 95817 USA
[2] Univ Calif Davis, Dept Pediat, Sacramento, CA 95817 USA
[3] Univ Calif Davis, Dept Emergency Med, Sacramento, CA 95817 USA
[4] Univ Calif Davis, Dept Internal Med, Sacramento, CA 95817 USA
[5] Univ Calif Davis, Dept Family Practice & Community Med, Sacramento, CA 95817 USA
[6] Univ Calif Davis, Dept Pharm, Sacramento, CA 95817 USA
[7] Univ Calif San Francisco, Dept Pharm, San Francisco, CA USA
[8] Univ Calif Irvine, Dept Pediat, Irvine, CA 92717 USA