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Parisi R, Iskandar IYK, Kontopantelis E, Augustin M, Griffiths CEM, Ashcroft DM; Global Psoriasis Atlas.Parisi R, et al. Among authors: griffiths cem.BMJ. 2020 May 28;369:m1590. doi: 10.1136/bmj.m1590.BMJ. 2020.PMID: 32467098Free PMC article.