[1] Harrogate & Dist NHS Fdn Trust, Dept Dermatol, Harrogate, N Yorkshire, England
[2] Leeds Teaching Hosp NHS Trust, Leeds, W Yorkshire, England
[3] Norfolk & Norwich Univ Hosp NHS Fdn Trust, Dept Dermatol, Norwich, Norfolk, England
[4] Univ Bristol, Sch Social & Community Med, Bristol, Avon, England
[5] Univ Hull, Fac Hlth & Social Care, Kingston Upon Hull HU6 7RX, N Humberside, England
[6] Univ Huddersfield, Dept Pharm, Huddersfield HD1 3DH, W Yorkshire, England
[7] British Lib, Sci Technol Med, London, England
[8] Yorkshire & Humber Clin Res Network, Sheffield, S Yorkshire, England
[9] Natl Inst Hlth & Care Excellence, UK Database Uncertainties Effects Treatment UK DU, London, England
[10] James Lind Alliance, NIHR Evaluat Trials & Studies Coordinating Ctr, Southampton, Hants, England