[1] Carol Davila Univ Med & Pharm, Fac Dent, Dept Microbiol, Bucharest 020021, Romania
[2] Carol Davila Univ Med & Pharm, Fac Dent, Dept Genet, Bucharest 020021, Romania
[3] Carol Davila Univ Med & Pharm, Fac Dent, Dept Periodontol, Bucharest 020021, Romania
[4] Titu Maiorescu Univ, Fac Dent Med, Dept Special Disciplines, Bucharest 031593, Romania