1. GREMPAL Research Group; Institut Universitari d'Investigació en Atenció Primària Jordi Gol (IDIAP Jordi Gol); Barcelona Spain
2. Department of Endocrinology; Copenhagen University Hospital Hvidovre, Kettegaards Alle; Hvidovre Denmark
3. URFOA-IMIM and RETICEF; Parc de Salut Mar and Instituto de Salud Carlos III; Barcelona Spain
4. Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences; Oxford NIHR Musculoskeletal Biomedical Research Unit, University of Oxford; Oxford OX3 7LD UK
5. Odense Patient Data Explorative Network, Institute of Clinical Research; University of Southern Denmark; Odense Denmark
6. Department of Medicine; Holbaek Hospital; Holbaek Denmark