1. Department of Microbiology and Oral Microbiology; Suita Osaka 565
2. Osaka Research Institute; Sawai Pharmaceutical Co., Ltd.; Asahi-ku Osaka 535
3. Osaka College of Medical Technology; Kita-ku Osaka 530
4. Department of Periodontology and Endodontology; Osaka University Dental School; Suita, Osaka 565
5. Department of Biochemistry; Shimane Medical University; Izumo, Shimane 693
6. Department of Oral Microbiology; Okayama University Dental School; Shikata-cho, Okayama 700
7. Department of Bacteriology; Osaka City University Medical School; Abeno-ku, Osaka 545
8. Department of Bacteriology; Hyogo College of Medicine; Nishinomiya Hyogo 663
9. Laboratory of Microbiology; Osaka Prefectural Institute of Public Health; Higashi-ku Osaka 537
10. New Drug Research Laboratories; Chugai Pharmaceutical Co., Ltd.; Toshima-ku Tokyo 171
11. Tokyo Research Institute; Seikagaku Kogyo Co., Ltd.; Higashiyamato Tokyo 189