1. Department of Rheumatology, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, Aarhus N 8240, Denmark
2. Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
3. Health Sciences Research Unit: Nursing, Higher School of Nursing of Coimbra, Coimbra, Portugal
4. Rheumatology, Centro Hospitalar e Universitário de Coimbra EPE, Coimbra, Portugal
5. Centre for Rheumatic Diseases, King’s College London, London, UK
6. Department of Qualitative Health Sciences, Mayo Clinic, Rochester, MN, USA
7. Department of Internal Medicine, Division of Rheumatology, Mayo Clinic, Rochester, MN, USA