1. Division of Rheumatology, Department of Internal Medicine, Nagano Red Cross Hospital, Japan
2. Division of Neurology, Joetsu General Hospital, Japan
3. Division of Cardiology, Joetsu General Hospital, Japan
4. Department of Cardiovascular Surgery, Nagano Red Cross Hospital, Japan
5. Department of Pathology, Nagano Red Cross Hospital, Japan
6. Department of Cardiology, Nagano Red Cross Hospital, Japan