1. Laboratory of Microbiology and Immunology, College of Pharmacy, Kangwon National University, Chuncheon 200-701, Republic of Korea
2. College of Pharmacy, Ajou University, Suwon 443-749, Republic of Korea
3. Targeted Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Cheongwon 363-883, Republic of Korea
4. Department of Microbiology, Chungcheongnam-Do Institute of Health and Environmental Research, Daejeon 300-801, Republic of Korea