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1 Department of Dermatology, Venereology and Dermatologic Surgery, Medical Institute of Ministry of Interior (MVR), General Skobelev blvd. 79, 1606, Sofia, Bulgaria. georgi_tchernev@yahoo.de.
2 Department of Pathology, University of Virginia Health System, 1215 Lee Street, Box 800214,, Charlottesville, VA, 22908, USA.
3 Onkoderma-Policlinic for Dermatology and Dermatologic Surgery, General Skobelev 26 blvd., Sofia, Bulgaria.
4 Department of Dermatology and Venereology, Medical University of Plovdiv, Medical Faculty, Plovdiv, Bulgaria.
1 Department of Dermatology, Venereology and Dermatologic Surgery, Medical Institute of Ministry of Interior (MVR), General Skobelev blvd. 79, 1606, Sofia, Bulgaria. georgi_tchernev@yahoo.de.
2 Department of Pathology, University of Virginia Health System, 1215 Lee Street, Box 800214,, Charlottesville, VA, 22908, USA.
3 Onkoderma-Policlinic for Dermatology and Dermatologic Surgery, General Skobelev 26 blvd., Sofia, Bulgaria.
4 Department of Dermatology and Venereology, Medical University of Plovdiv, Medical Faculty, Plovdiv, Bulgaria.