1. Department of Pathology & Microbiology, Faculty of Medicine, Saga University, Nabeshima 5-1-1, Saga 849-8501, Japan
2. Department of Internal Medicine, Faculty of Medicine, Saga University, Nabeshima 5-1-1, Saga 849-8501, Japan
3. University Hospital Pathology, Faculty of Medicine, Saga University, Nabeshima 5-1-1, Saga 849-8501, Japan
4. Department of Surgery, Koike Hospital, Saga 840-0862, Japan
5. School of Rehabilitation Science, International University of Health and Welfare, Fukuoka 831-8501, Japan