1Hospital del Mar Research Institute (IMIM), Centro de Investigación Biomédica en Red de Fragilidad y Envejecimiento Saludable (CIBERFES), Barcelona, Spain
2Internal Medicine Department, Hospital del Mar, Universitat Autònoma de Barcelona, Barcelona, Spain
3Cancer Research Program, Hospital del Mar Research Institute (IMIM), Barcelona, Spain
4Medical Oncology Department, Hospital del Mar, Barcelona, Spain
5Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Centre for Statistics in Medicine, University of Oxford, Oxford, UK
6Grup de Recerca en Malalties Prevalents de L’Aparell Locomotor (GREMPAL) Research Group and CIBERFES, University Institute for Primary CareResearch (IDIAP) Jordi Gol, Universitat Autònoma de Barcelona and Instituto de Salud Carlos III, Barcelona, Spain