Georgi Tchernev1,2, Anastasiya Atanasova Chokoeva3,4. 1. Department of Dermatology, Venereology and Dermatologic Surgery Sofia, Medical Institute of Ministry of Interior (MVR-Sofia), Sofia, Bulgaria. georgi_tchernev@yahoo.de. 2. "Onkoderma"-Policlinic for Dermatology and Dermatologic Surgery, General Skobelev 26blvd, Sofia, Bulgaria. georgi_tchernev@yahoo.de. 3. Department of Dermatology and Venereology, Medical University of Plovdiv Medical Faculty, Plovdiv, Bulgaria. 4. "Onkoderma"-Policlinic for Dermatology and Dermatologic Surgery, General Skobelev 26blvd, Sofia, Bulgaria.