1. Department of Neurosurgery, National Hospital Organization Kyoto Medical Center, Kyoto, Kyoto, Japan
2. Department of Pathology, National Hospital Organization Kyoto Medical Center, Kyoto, Kyoto, Japan
3. Department of Medical Oncology, National Hospital Organization Kyoto Medical Center, Kyoto, Kyoto, Japan
4. Department of Chest Surgery, National Hospital Organization Kyoto Medical Center, Kyoto, Kyoto, Japan