[1] Case Western Reserve Univ, Dept Pediat, MetroHealth Med Ctr, Cleveland, OH 44109 USA
[2] Newcastle Univ, Inst Genet Med, John Walton Muscular Dystrophy, Newcastle Upon Tyne, Tyne & Wear, England
[3] RTI Int, Res Triangle Pk, NC USA
[4] Seattle Childrens Hosp, Dept Rehabil Med, Seattle, WA USA
[5] Massachusetts Gen Hosp, Boston, MA 02114 USA
[6] Harvard Med Sch, Boston, MA USA
[7] Ohio State Univ, Nationwide Childrens Hosp, Dept Pediat, Columbus, OH 43210 USA
[8] Ctr Dis Control & Prevent, Rare Disorders & Hlth OutcomesTeam, Natl Ctr Birth Defects & Dev Disabil, Atlanta, GA USA
[9] Oak Ridge Inst Sci & Educ, Oak Ridge, TN USA
[10] Parent Project Muscular Dystrophy, Hackensack, NJ USA
[11] Univ Calif Oakland, San Francisco Benioff Childrens Hosp, Emergency Dept, Oakland, CA USA
[12] Baylor Coll Med, Houston, TX USA
[13] Univ Iowa, Stead Family Dept Pediat, Iowa City, IA USA
[14] Univ Rochester, Med Ctr, Div Endocrinol & Diabet, Golisano Childrens Hosp, Rochester, NY 14642 USA
[15] Childrens Hosp Eastern Ontario, Div Endocrinol & Metab, Ottawa, ON, Canada
[16] Univ Ottawa, Ottawa, ON, Canada