San Diego State University, San Diego, California, United States
Istituto Ortopedico Galeazzi, Milano, Italy
Assiut University, Assiut, Egypt
Istituto Ortopedico Rizzoli, Bologna, Italy
Shriners Hospitals for Children - Tampa, Tampa, Florida, United States
University of Iowa ICTS, Iowa City, Iowa, United States
St Louis Children's Hospital, Saint Louis, Missouri, United States
Hospital Clinic i Provincial of Barcelona, Barcelona, Spain
Institute for Human Performance/Upstate Medical University, Syracuse, New York, United States