[1] Brown Univ, Div Sports Med, Rhode Isl Hosp, Dept Orthoped,Warren Alpert Med Sch,Hasbro Childr, 1 Kettle Point Dr,Suite 300, East Providence, RI 02915 USA
[2] Brown Univ, Dept Pediat, Rhode Isl Hosp, Warren Alpert Med Sch,Hasbro Childrens Hosp, 1 Kettle Point Dr,Suite 300, East Providence, RI 02915 USA
[3] Univ Minnesota, Dept Family Med & Community Hlth, 516 Delaware St Southeast, Minneapolis, MN USA