1. Department of Cardiovascular Medicine, Rumoi City Hospital, Japan
2. Department of the Internal Medicine, Cardiovascular, Respiratory and Neurology Division, Asahikawa Medical University, Japan
3. Department of Laboratory Medicine, Asahikawa Medical University, Japan
4. Department of Diagnostic Pathology, Asahikawa Medical University Hospital, Japan
5. Department of the Neuromuscular Research, National Institute of Neuroscience, Japan