1. Wake Forest University Winston‐Salem North Carolina
2. Wake Forest School of Medicine Winston‐Salem North Carolina
3. East Carolina University Greenville North Carolina
4. Royal North Shore Hospital and Institute of Bone and Joint Research University of Sydney SydneyAustralia
5. Paracelsus Medical University Salzburg, Austria Chondrometrics GmbH, Ainring, Germany
6. Boston University Boston Massachusetts
7. University of North Carolina Chapel Hill