[1] Univ Cologne, Ctr Prevent & Rehabil, Unireha, Cologne, Germany
[2] Univ Cologne, Childrens Hosp, Kerpenerstr 62, D-50931 Cologne, Germany
[3] Univ Appl Sci Amsterdam, Fac Hlth, Ctr Appl Res, ACHIEVE, Amsterdam, Netherlands
[4] Univ Amsterdam, Acad Med Ctr, Dept Rehabil, Amsterdam Movement Sci, Amsterdam, Netherlands
[5] Hosp Special Surg, Nyc, NY USA
[6] Childrens Hosp, Toulouse, France
[7] Hosp Clin Porto Alegre, Med Genet Serv, Porto Alegre, RS, Brazil
[8] Sunnaas Rehabil Hosp, Natl Advisory Unit Rare Disorders NKSD, Natl Resource Ctr Rare Disorders, Nesodden, Norway
[9] IRCCS Eugenio Medea, Bosisio Parini, LC, Italy
[10] Sheffield Childrens NHS Fdn Trust, Sheffield, S Yorkshire, England
[11] Univ Hosp Bristol NHS Fdn Trust, Bristol Royal Hosp Children, Bristol, Avon, England
[12] Shriners Hosp Children, Montreal, PQ, Canada
[13] Childrens Hosp Westmead, Sydney, NSW, Australia
[14] Macquarie Univ, Sydney, NSW, Australia
[15] AHUCE, Madrid, Spain
[16] Fdn AHUCE, Madrid, Spain
[17] Univ Med Ctr Utrecht, Wilhelminas Children Hosp, Child Dev & Exercise Ctr, Utrecht, Netherlands
[18] Univ Leuven, Leuven, Belgium
[19] Univ Hong Kong, Hong Kong, Hong Kong, Peoples R China