1. Faculty of Medicine, ‘Carol Davila’ University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. Department of Dermatology, Colentina Clinical Hospital, 020125 Bucharest, Romania
3. Department of Cellular and Molecular Pathology, ‘Stefan S. Nicolau’ Institute of Virology, 030304 Bucharest, Romania
4. Department of Pathology, University of Medicine and Pharmacy of Craiova, 200349 Craiova, Romania