1OsteoRheuma Bern, Bern, Switzerland
2Department of Rheumatology and Immunology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
3Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
4Spalt- und Kraniofaziales Zentrum, Praxis Prof. Obwegeser, Zürich, Switzerland
5Institute for Social and Preventive Medicine, University of Bern, Bern, Switzerland