1. Department of Internal Medicine, Okayama Saiseikai General Hospital
2. Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
3. Department of Cardiology, The Sakakibara Heart Institute of Okayama
4. Department of Emergency Medicine, Okayama Saiseikai General Hospital
5. Department of Pathology, Okayama Saiseikai General Hospital
6. Department of Pathology, Amagasaki Chuo Hospital
7. Department of Pathology, National Cerebral and Cardiovascular Center