1 Division of Nosocomial Pathogens and Antibiotic Resistances, Department of Infectious Diseases, Robert Koch Institute, Wernigerode, Germany.
2 Division of Oral Microbiology and Immunology, Department of Operative Dentistry, Periodontology and Preventive Dentistry, Rheinisch-Westfälische Technische Hochschule (RWTH) University Hospital, Aachen, Germany.
3 Bioinformatics Department, College of Biotechnology, Mirs University for Science and Technology, Cairo, Egypt.
4 Biology Department, School of Sciences and Engineering, The American University in Cairo, New Cairo, Egypt.
5 Department of Oral Microbiology, School of Dentistry, Pusan National University, Yangsan, Republic of Korea.