[1] Yale Univ, Sch Med, Dept Dermatol, New Haven, CT 06520 USA
[2] Univ Calif San Francisco, Dept Dermatol, San Francisco, CA 94143 USA
[3] Univ Calif San Francisco, Inst Hlth Policy Studies, San Francisco, CA 94143 USA
[4] Cincinnati Childrens Hosp, Dept Pediat, Cincinnati, OH USA
[5] Harvard Univ, Sch Med, Harvard Pediat Hlth Serv Res Fellowship Program, Boston, MA USA
[6] Childrens Hosp, Boston, MA 02115 USA
[7] Univ Penn, Sch Med, Childrens Hosp Philadelphia, Div Gen Pediat,Sect Dermatol, Philadelphia, PA 19104 USA
[8] Bassett Healthcare, Div Dermatol, Cooperstown, NY USA
[9] Columbia Univ, Coll Phys & Surg, New York, NY USA