Corresponding Author

Kenichiro Yamagata MD, PhD

Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka, 564-8565 Japan

Correspondence Dr. Kenichiro Yamagata, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, 6-1 Kishibe-Shimmachi, Suita, Osaka 564-8565, Japan.

Email: look.tky@ncvc.go.jp