1. First Department of Internal Medicine, Faculty of Medicine; Kyushu University; Fukuoka Fukuoka 812
2. Department of General Medicine, Faculty of Medicine; Kyushu University; Fukuoka Fukuoka 812
3. Fukuoka Teishin Hospital; Fukuoka Fukuoka 810
4. Department of Pathology, School of Medicine; Fukuoka University; Fukuoka Fukuoka 814-01