Affiliation: | 1. Research Laboratory and Academic Division of Clinical Rheumatology, Department of Internal Medicine, University of Genoa, Via Balbi 5, Genoa, Italy;2. Department of Rheumatology, Ghent University Hospital, Department of Internal Medicine, Ghent University, Corneel Heymanslaan 10, Ghent, Belgium;3. Biostatistics Unit, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium;4. Division of Rheumatology, Chris Hani Baragwanath Academic Hospital, Faculty of Health Sciences, University of the Witwatersrand, PO Box Bertsham 2013, Johannesburg, South Africa;5. Department of Rheumatology, Ghent University Hospital, Corneel Heymanslaan 10, Ghent, Belgium |