1. Department of Cellular Pathology Hospital El Bierzo Ponferrada Spain
2. Department of Cellular Pathology Hospital de la Reina Ponferrada Spain
3. Research Department, Institute for Biomedical Research of A Coruña (INIBIC) University of A Coruña (UDC) A Coruña Spain
4. Dermatology Department Hospital Universitario Ramón y Cajal Madrid Spain
5. Dermatology Department Hospital Universitario Quirón San José Madrid Spain
6. Dermatology Department Hospital Universitario HM Montepríncipe Madrid Spain