1. Department of Radiology, Nihon University School of Medicine, Tokyo 173‑8610, Japan
2. Division of Ophthalmology, Department of Visual Sciences, Nihon University School of Medicine, Tokyo 173‑8610, Japan
3. Division of Hematology and Rheumatology, Department of Medicine, Nihon University School of Medicine, Tokyo 173‑8610, Japan
4. Department of Oncologic Pathology, Nihon University School of Medicine, Tokyo 173‑8610, Japan
5. Division of Hematology and Oncology, Department of Medicine, Kyoto Prefectural University of Medicine, Kyoto 602‑8566, Japan