1. Hospital del Mar‐IMIM, Universitat Autònoma de Barcelona, RETICEFInstituto Carlos IIIBarcelonaSpain
2. Oxford NIHR Musculoskeletal Biomedical Research UnitNuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal SciencesUniversity of OxfordOxfordUnited Kingdom
3. GREMPAL Research GroupIdiap Jordi Gol Primary Care Research InstituteUniversitat Autònoma de BarcelonaBarcelonaSpain
4. Castelldefels School of Telecom and Aerospace Engineering (EETAC)Universitat Politècnica de CatalunyaBarcelonaSpain
5. Department of PhysicsUniversity of California at Santa BarbaraSanta BarbaraCAUSA