[1] Carol Davila Univ Med & Pharm, Fac Pharm, Dept Gen & Pharmaceut Microbiol, Bucharest 020956, Romania
[2] Transilvania Univ, Fac Med, Bra?ov 500036, Romania
[3] Carol Davila Univ Med & Pharm, Dept Epidemiol 1, Bucharest 020021, Romania
[4] Prof Dr Matei Bal? Natl Inst Infect Dis, Bucharest 021105, Romania
[5] Carol Davila Univ Med & Pharm, Dept Infect Dis 1, Bucharest 020021, Romania