1. Department of Pathology, Institute of Medical Science, Dong-A University College of Medicine, Busan, Korea.
2. Department of Internal Medicine, Institute of Medical Science, Dong-A University College of Medicine, Busan, Korea.
3. Department of General Surgery, Institute of Medical Science, Dong-A University College of Medicine, Busan, Korea.
4. Department of Pharmacology, Institute of Medical Science, Dong-A University College of Medicine, Busan, Korea.