1 Department of Cardiology Center, Sendai Kousei Hospital, Sendai, Miyagi, Japan; Department of Laboratory Medicine, The Jikei University School of Medicine, Tokyo, Japan. Electronic address: y.enta0414@icloud.com.
2 Department of Cardiology Center, Sendai Kousei Hospital, Sendai, Miyagi, Japan.
3 Department of Cardiovascular Surgery, Sendai Kousei Hospital, Sendai, Miyagi, Japan.