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Contributors All authors contributed to the planning, conduct and reporting of the work.
Funding This work was funded by the Leeds Musculoskeletal Biomedical Research Unit. EMV, SD, MHB and PE have received honoraria from Roche. MFM was sponsored by the Valencian Society of Rheumatology & Spanish Society of Rheumatology.
Competing interests PE has received consultancy fees from Pfizer, MSD, Abbott, UCB BMS, Roche and Novartis, and lecture fees from Pfizer, MSD, Abbott and UCB. SD has received funding from Roche, Pfizer. MFM has received a funding grant from Valencia Society of Rheumatology and Spanish Society of Rheumatology. EV has received a funding grant and lecture fees from Roche. SDass has received consultancy and lecture fees from Roche. MB has received consultancy fees from Abbot, BMS, Roche; lecture fees from Abbott, BMS, Roche, Pfizer and a pending grant from Pfizer.
Provenance and peer review Not commissioned; externally peer reviewed.
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