1 Centre for Translational Inflammation Research, Institute of Inflammation and Ageing, College of Medical & Dental Sciences, University of Birmingham Research Laboratories, Queen Elizabeth Hospital, Birmingham, United Kingdom. Electronic address: f.barone@bham.ac.uk.
2 Laboratory of Tissue Homeostasis and Disease, Skeletal Biology and Engineering Research Center, KU Leuven and Division of Rheumatology, University Hospitals Leuven, Belgium.