1. Department of Microbiology and Immunology, Seoul National University College of Medicine, Seoul, Korea.
2. Translational Xenotransplantation Research Center, Seoul National University College of Medicine, Seoul, Korea.
3. Cancer Research Institute, Seoul National University College of Medicine, Seoul, Korea.
4. Institute of Endemic Diseases, Seoul National University College of Medicine, Seoul, Korea.
5. Organ Transplantation Center, Myong-Ji Hospital, Goyang, Korea.