1. Department of Paediatric Dentistry, Faculty of Dental Medicine , Iuliu Hațieganu University of Medicine and Pharmacy Cluj-Napoca , Avram Iancu St., no.31 , , Cluj-Napoca , Romania .
2. Clinical Hospital of Infectious Diseases , Cluj-Napoca, Romania .
3. Department of Periodontology, Faculty of Dental Medicine , Iuliu Haţieganu University of Medicine and Pharmacy Cluj-Napoca , Victor Babeş St., no.15 , Cluj-Napoca , Romania .
4. Emegency County Clinical Hospital , Cluj-Napoca , Romania
5. Department of Infectious Disease, Faculty of Veterinary Medicine , University of Agricultural Sciences and Veterinary Medicine , Calea Mănăștur St., no.3-5 , Cluj-Napoca , Romania .
6. Faculty of Dentistry , University of Medicine and Pharmacy from Craiova , 2 Petru Rares St ., Craiova , Romania