[1] Yale Univ, Robert Wood Johnson Clin Scholars Program, New Haven, CT USA
[2] Cincinnati Childrens Hosp, Med Ctr, Dept Hlth & Human Serv, Cincinnati, OH USA
[3] Cincinnati Childrens Hosp, Med Ctr, Ctr Hlth Care Qual, Cincinnati, OH USA
[4] Cincinnati Childrens Hosp, Med Ctr, Div Hlth Policy & Clin Effectiveness, Cincinnati, OH USA
[5] Cincinnati Childrens Hosp, Med Ctr, Div Gen Pediat, Cincinnati, OH USA