1. Department of Cellular Pathology; HospitalEl Bierzo; Ponferrada Spain
2. Biomedical Investigation Institute of A Coruña; CellCOM-ST Group; A Coruña Spain
3. Department of Cellular Pathology; Hospital de la Reina; Ponferrada Spain
4. Histopathology Department; Birmingham Children's Hospital; Birmingham UK
5. Dermatology Department; Birmingham Children's Hospital; Birmingham UK
6. Plastic Surgery Department; Birmingham Children's Hospital; Birmingham UK
7. Histopathology Department; Warwick Hospital; Warwick UK
8. Histopathology Department; Hospital Infantil Universitario Niño Jesus; Madrid Spain