1. Brain Korea 21 Project for Medical Sciences, Yonsei University College of Medicine, Seoul, Korea.
2. Department of Environmental Medical Biology, Yonsei University College of Medicine, Seoul, Korea.
3. Department of Microbiology and Immunology, Yonsei University College of Medicine, Seoul, Korea.
4. Department of Laboratory Medicine, Yonsei University College of Medicine, Seoul, Korea.
5. Research Institute of Bacterial Resistance, Yonsei University College of Medicine, Seoul, Korea.