| Affiliation: | (1) Department of Microbiology, College of Natural Sciences, Chungbuk National University, Cheongju, Chungbuk, 361-763, South Korea;(2) National Institute of Environmental Research, Seoul National University, Seoul, South Korea;(3) Department of Microbiology, School of Medicine, Chungbuk National University, Cheongju, South Korea;(4) Seoul Metropolitan Institute of Public Health and Environment, Seoul National University, Seoul, South Korea;(5) Water Analysis and Research Center, K-Water, Seoul National University, Seoul, South Korea;(6) Department of Microbiology, Catholic University Medical School, Seoul National University, Seoul, South Korea;(7) School of Public Health, Seoul National University, Seoul, South Korea |
