1. BK21 Plus, Department of Cellular and Molecular Medicine, Konkuk University School of Medicine, Seoul 05030, Korea.
2. Department of Infection and Immunology, Konkuk University School of Medicine, Seoul 05030, Korea.
3. Department of Anesthesiology and Pain Medicine, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05030, Korea.
4. Research Institute of Medical Science, Konkuk University School of Medicine, Seoul 05030, Korea.
5. Department of Pathology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul 05030, Korea.