1. McKay Orthopaedic LaboratoryUniversity of PennsylvaniaPhiladelphiaPennsylvania
2. Department of KinesiologyTemple UniversityPhiladelphiaPennsylvania
3. Department of Biomedical EngineeringDrexel UniversityPhiladelphiaPennsylvania
4. Department of Orthopaedic SurgeryUniversity of PennsylvaniaPhiladelphiaPennsylvania
5. Department of Physical TherapyUniversity of DelawareNewarkDelaware