1. Accelerator Radioisotope Research Section, Advanced Radiation Technology Institute, Korea Atomic Energy Research Institute, Jeongeup, Republic of Korea
2. Department of Oral Microbiology and Immunology, DRI, and BK21 Plus Program, School of Dentistry, Seoul National University, Seoul, Republic of Korea
3. Department of Internal Medicine, Korea University College of Medicine, Seoul, Republic of Korea
4. Animal Production and Health Laboratory, Joint FAO/IAEA Centre for Nuclear Applications in Food and Agriculture, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, Seibersdorf, Austria
5. Department of Radiation Science, University of Science and Technology, Daejeon, Republic of Korea