[1] Robert Koch Inst, Div Nosocomial Pathogens & Antibiot Resistances, Dept Infect Dis, Wernigerode, Germany
[2] Rhein Westfal TH RWTH Univ Hosp, Dept Operat Dent Periodontol & Prevent Dent, Div Oral Microbiol & Immunol, Aachen, Germany
[3] Mirs Univ Sci & Technol, Coll Biotechnol, Bioinformat Dept, Cairo, Egypt
[4] Amer Univ Cairo, Sch Sci & Engn, Biol Dept, New Cairo, Egypt
[5] Pusan Natl Univ, Sch Dent, Dept Oral Microbiol, Yangsan, South Korea