The BSR-PsA: study protocol for the British Society for Rheumatology psoriatic arthritis register.
Gareth T JonesGary J MacfarlaneKaren Forrest KeenanPaul McNameeAileen R NeilsonStefan SiebertA David BurdenLesley KayPhilip S HelliwellPublished in: BMC rheumatology (2021)
The full study protocol is registered on the Open Science Framework ( https://osf.io/jzs8n ).