1. Radiation Research Division, Korea Atomic Energy Research Institute, Jeongeup, Republic of Korea
2. Department of Radiation Biotechnology and Applied Radioisotope Science, University of Science and Technology, Daejeon, Republic of Korea
3. Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Republic of Korea
4. Clinical Research Laboratory, Sciences Unit, International Vaccine Institute, Seoul, Republic of Korea
5. Department of Microbiology, Ewha Womans University College of Medicine, Seoul, Republic of Korea
6. Ewha Education & Research Center for Infection, Ewha Womans University Medical Center, Seoul, Republic of Korea