1. Regenerative Medicine Laboratory, BioCruces Bizkaia Health Research Institute, Cruces University Hospital, Barakaldo, Spain
2. Department of Musculoskeletal Disorders, University of Salerno School of Medicine and Dentistry, Salerno, Italy
3. Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, UK
4. Preventive Medicine and Public Health Department, University of the Basque Country, Faculty of Medicine and Odontology, UPV/EHU, Leioa, Bizkaia, Spain