1. Institute of Anatomy, Paracelsus Medical University, Salzburg, Austria, and Chondrometrics GmbH; Ainring Germany
2. Brigham and Women's Hospital and Harvard Medical School; Boston Massachusetts
3. University of California; San Francisco
4. Duke University School of Medicine; Durham North Carolina
5. Boston University School of Medicine and Boston Core Imaging Lab; Boston Massachusetts
6. Boston University School of Medicine and Boston Core Imaging Lab, Boston, Massachusetts, and University of Erlangen-Nuremberg; Erlangen Germany
7. Royal North Shore Hospital, Kolling Institute of Medical Research, and University of Sydney; Sydney New South Wales Australia