1. Department of Pathology, Kyorin University, Tokyo 181-8611, Japan
2. Department of Pathology, Showa University Northern Yokohama Hospital, Yokohama 224-8503, Japan
3. Department of Human Pathology, University of Yamanashi, Yamanashi 409-3898, Japan
4. Division of Diagnostic Pathology/Surgical Pathology, University of Fukui Hospital, Fukui 910-1193, Japan
5. Department of Tumor and Diagnostic Pathology, Atomic Bomb Disease Institute, Nagasaki University, Nagasaki 852-8523, Japan
6. Division of Pathology, the Cancer Institute, Japan Foundation for Cancer Research, Tokyo 135-8550, Japan
7. Department of Diagnostic Pathology and Cytology, Kuma Hospital, Kobe 650-0011, Japan