1. Department of Rheumatology, University Hospitals Leuven, Leuven, Belgium
2. Skeletal Biology and Engineering Research Centre, Department of Development and Regeneration, KU Leuven, Leuven, Belgium
3. Department of Dermatology, University Hospitals Leuven, Leuven, Belgium
4. Clinic for Occupational and Environmental Medicine, Department of Pulmonary Medicine, University Hospitals Leuven, Leuven, Belgium
5. Centre for Environment and Health, Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
6. Department of Rheumatology, Imelda General Hospital, Bonheiden, Belgium