1. Department of Nephrology and Rheumatology, Niigata City General Hospital, Japan
2. Department of Hematology, Niigata City General Hospital, Japan
3. Department of Thoracic and Cardiovascular Surgery, Niigata City General Hospital, Japan
4. Department of General Internal Medicine, Niigata City General Hospital, Japan
5. Department of Pathology, Niigata City General Hospital, Japan