1 St John's Institute of Dermatology, Guy's and St Thomas' NHS Foundation Trust and King's College London, London, UK.
2 NIHR Biomedical Research Centre at Guy's and St Thomas' NHS Foundation Trust and King's College London, London, UK.
3 Centre for Rheumatic Diseases, King's College London, London, UK.
4 Dermatology Centre, Salford Royal NHS Foundation Trust, The University of Manchester, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Centre, Manchester, UK.
5 Faculty of Epidemiology, and Population Health, London School of Hygiene and Tropical Medicine, London, UK.
6 Department of Medical and Molecular Genetics, School of Basic and Medical Biosciences, Faculty of Life Sciences and Medicine, King's College London, London, UK.
7 Health Data Research UK, London, UK.
8 School of Medicine, Keele University, Keele, UK.
9 The Psoriasis Association, Northampton, UK.
10 International Federation of Psoriasis Associations (IFPA), Bromma, Sweden.
11 Department of Dermatology, AP-HP Hôpital Saint-Louis, Paris, France.
12 INSERM U1163, Imagine Institute for Human Genetic Diseases, Université de Paris, Paris, France.
13 Catedra de Dermatologia, Hospital de Clinicas, Facultad de Ciencias Medicas, Universidad Nacional de Asuncion, San Lorenzo, Paraguay.
14 Clinica Dermacross, Santiago, Chile.
15 St John's Institute of Dermatology, School of Basic & Medical Biosciences, Faculty of Life Sciences & Medicine, King's College London, London, UK.
16 Section of Dermatology and Venereology, University of Verona, Verona, Italy.
17 Department of Dermatology, Edouard Herriot Hospital, Hospices Civils de Lyon, University of Lyon, Lyon, France.
18 Groupe de Recherche sur le Psoriasis (GrPso) de la Société Française de Dermatologie, Paris, France.
19 Department of Dermatology, Ghent University, Ghent, Belgium.
20 Centro Studi GISED, Bergamo, Italy.
21 Psychology Department, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, UK.
22 Department of Dermatology, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain.
23 Department of Dermatology, Amsterdam Public Health/Infection and Immunology, Amsterdam University Medical Centers, Location AMC, Amsterdam, The Netherlands.
24 Department of Dermatology, Centro Hospitalar do Porto, Porto, Portugal.
25 School of Cancer and Pharmaceutical Sciences, King's College London, London, UK.