1. O.A.S.I. Bioresearch Foundation, Gobbi NPO, Milano, Italy.
2. Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, Oulu, Finland;
3. Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Vilnius, Lithuania.
4. Department of Orthopedics and University Medical Center Utrecht, Utrecht, The Netherlands.
5. Department of Rheumatology and Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.
6. Department of Joint Surgery, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.