[1] Univ Manchester, Sch Hlth Sci, Div Pharm & Optometry, Manchester, Lancs, England
[2] Global Psoriasis Atlas, Manchester, Lancs, England
[3] NIHR Manchester Biomed Res Ctr, Manchester Acad Hlth Sci Ctr, Manchester, Lancs, England
[4] Univ Manchester, Sch Hlth Sci, Div Populat Hlth Hlth Serv Res & Primary Care, Manchester, Lancs, England
[5] Univ Manchester, Salford Royal NHS Fdn Trust, Dermatol Ctr, Manchester, Lancs, England