1. Center for Gait and Motion Analysis; Gillette Children's Specialty Healthcare; Saint Paul MN USA
2. Physical Medicine and Rehabilitation Department; Gillette Children's Specialty Healthcare; Saint Paul MN USA
3. Physical Medicine and Rehabilitation; University of Minnesota - Twin Cities; Minneapolis MN USA
4. Courage Kenny Rehabilitation Institute; Minneapolis MN USA
5. Department of Orthopaedic Surgery; University of Minnesota - Twin Cities; Minneapolis MN USA