1. Department of Human Pathology, Wakayama Medical University, 811-1 Kimiidera, Wakayama 641-8509, Japan
2. Department of Diagnostic Pathology, Japanese Red Cross Kochi Hospital, 1-4-63-11 Hataminami-cho, Kochi-shi, Kochi 780-8562, Japan
3. Department of Internal Medicine, Kinrou Hospital, 3-2-28 Azounokitamachi, Kochi 781-0011, Japan
4. Department of Surgical Pathology, Tokyo Women’s Medical University Hospital, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan