1. Department of Rheumatology and Clinical Immunology, Charité-Universitätsmedizin, Berlin, Germany
2. Berlin Brandenburg School for Regenerative Therapies, Charité-Universitätsmedizin, Berlin, Germany
3. German Rheumatism Research Centre Berlin, Berlin, Germany
4. Julius Wolff Institute and Center for Musculoskeletal Surgery, Charité-Universitätsmedizin, Berlin, Germany
5. Berlin Brandenburg Center for Regenerative Therapies, Charité-Universitätsmedizin, Berlin, Germany