1. Department of Periodontology, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
2. Center of Excellence in Periodontal Disease and Dental Implant, Chulalongkorn University, Bangkok, Thailand
3. Immunology Research Center, Faculty of Dentistry, Chulalongkorn University, Bangkok, Thailand
4. Department of Conservative Dentistry, Faculty of Dentistry, Prince of Songkhla University, Songkhla, Thailand
5. Genomic Medicine and Infectious Diseases, J. Craig Venter Institute, La Jolla, CA, USA
6. Department of Microbiology, University of Pennsylvania, Philadelphia, PA, USA
7. Department of Bacterial and Parasitic Diseases, AFRIMS, Bangkok, Thailand