Affiliation: | 1. Université Saint-Joseph, School of Medicine, Beirut, Lebanon;2. Hôtel-Dieu de France, Dermatology department, Beirut, Lebanon;1. Dermatology Department, Reference Centre for Pseudoxanthoma Elasticum (MAGEC), Angers University Hospital, 4, rue Larrey, 49933 Angers, France;2. University of Tours, INSERM 1246-SPHERE, Department of Dermatology, Tours University Hospital, 37000 Tours, France;3. Dermatology Department and Reference Centre for Rare Diseases and Vascular Malformations (MAGEC), Tours University Hospital, 37000 Tours, France;1. Catholic University of Lille, Dermatology, 59800 Lille, France;2. Catholic University of Lille, Pathology, 59800 Lille, France;3. University Hospital Center of Lille, Dermatology, 59000 Lille, France;1. Department of Dermatology, Montpellier University Hospital Center, Hôpital Saint-Eloi, 80, Avenue Augustin Fliche, 34090 Montpellier, France;2. Department of Dermatology, Perpignan Hospital, 66000 Perpignan, France;3. Department of Biopathology, Montpellier University Hospital Center, Hôpital Gui de Chauliac, 34295 Montpellier, France;1. Department of Dermatology and STD, University College of Medical Sciences and GTB Hospital, 110091 Delhi, India;2. Department of Dermatology and STD, All India Institute of Medical Sciences, 110029 Delhi, India;3. Nail Disease Centre-42, Rue de Serbes, 06400 Cannes, France |