1. Department of Dermatology; Venerology and Paediatric Dermatology; Lublin Poland
2. Department of Haemotooncology and Bone Marrow Transplantation; Medical University of Lublin; Lublin Poland
3. Department of Haemostatic Disorders and Internal Diseases; Institute of Haematology and Transfusion Medicine in Warsaw; Warsaw Poland
4. Department of Dermatology and Immunodermatology; Medical University of Warsaw; Warsaw Poland
5. Department of Medical Radiology; University Hospital No.1 in Lublin; Lublin Poland
6. 2nd Department of General, Gastroenterological and Alimentary Oncological Surgery; Medical University of Lublin; Lublin Poland
7. Department of Internal Diseases; University Hospital No.1; Medical University of Lublin; Lublin Poland
8. Dermatology Division; University of Rome G. Marconi; Rome Italy