1. Department of Dermatology Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona Barcelona Spain
2. Hereditary Hemorrhagic Telangiectasia Unit, Department of Internal Medicine Hospital Universitari de Bellvitge – IDIBELL, L'Hospitalet de Llobregat Barcelona Spain
3. Faculty of Medicine and Health Sciences Universitat de Barcelona Barcelona Spain
4. Department of Dermatology Hospital Sant Joan de Déu, Esplugues de Llobregat Barcelona Spain