1. Hôpital Henri Mondor; Department of Dermatology; 51 Avenue du Maréchal de Lattre de Tassigny Créteil France 94000
2. Hôpital Henri Mondor; Clinical Investigation Centre; Créteil France 94010
3. Université Paris Est Créteil (UPEC); Epidemiology in dermatology and evaluation of therapeutics (EpiDermE) - EA 7379; Créteil France
4. Paris Descartes University; School of Medicine; Paris France
5. Centre de Recherche Épidémiologie et Statistique Sorbonne Paris Cité (CRESS-UMR1153); METHODS team; Hôpital Hôtel-Dieu 1 place du Parvis Notre-Dame Paris France 75004
6. Cochrane France; Paris France
7. Complexo Hospitalario Universitario de Vigo; Department of Dermatology; Torrecedeira 10, 2º A Vigo Spain 36202
8. Université de Rennes 1; Department of Dermatology; 2 rue Henri le Guilloux Rennes France 35000
9. The University of Nottingham; c/o Cochrane Skin Group; A103, King's Meadow Campus Lenton Lane Nottingham UK NG7 2NR
10. Cardiff University; Department of Dermatology & Wound Healing, Cardiff Institute of Infection & Immunity; 3rd Floor Glamorgan House Heath Park Cardiff UK CF14 4XN
11. Padiglione Mazzoleni - Presidio Ospedaliero Matteo Rota; Centro Studi GISED (Italian Group for Epidemiologic Research in Dermatology) - FROM (Research Foundation of Ospedale Maggiore Bergamo); Via Garibaldi 13/15 Bergamo Italy 24122