1. Department of Microbiology, College of Medicine, the Catholic University of Korea, Seoul, Republic of Korea
2. Department of Environmental Health Research, National Institute of Environmental Research, Incheon, Republic of Korea
3. Department of Food Science and Technology, Ewha Womans University, Seoul, Republic of Korea
4. Department of Environmental Health, Seoul National University, Seoul, Republic of Korea
5. Division of Life Science, Chungbuk National University, Cheongju, Republic of Korea