1. Adult Stem Cell Research Center, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
2. Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul 08826, Republic of Korea
3. Pusan National University School of Medicine, Busan 49241, Republic of Korea
4. Biomedical Research Institute, Pusan National University Hospital, Busan 49241, Republic of Korea