Helliwell T, Brouwer E, Pease CT, Hughes R, Hill CL, Neill LM, Halls S, Simon LS, Mallen CD, Boers M, Kirwan JR, Mackie SL. Development of a Provisional Core Domain Set for Polymyalgia Rheumatica: Report from the OMERACT 12 Polymyalgia Rheumatica Working Group. J Rheumatol. 2016 Jan;43(1):182-6. doi: 10.3899/jrheum.141179. Epub 2015 Nov 15. PMID: 26568595.
Twohig H, Jones G, Mackie S, Mallen C, Mitchell C. Assessment of the face validity, feasibility and utility of a patient-completed questionnaire for polymyalgia rheumatica: a postal survey using the QQ-10 questionnaire. Pilot Feasibility Stud. 2017 Jul 6;4:7. doi: 10.1186/s40814-017-0150-y. Erratum in: Pilot Feasibility Stud. 2017 Oct 24;3:48. PMID: 28694986; PMCID: PMC5501557.