1 Department of Cardiovascular Medicine, Japan Community Healthcare Organization Kyushu Hospital, 1-8-1, Yahatanishi-ku, Kitakyushu, Fukuoka 806-8501, Japan.
2 Department of Cardiovascular Medicine, Japan Community Healthcare Organization Kyushu Hospital, 1-8-1, Yahatanishi-ku, Kitakyushu, Fukuoka 806-8501, Japan. email: tadokoro.tomonori.0526@gmail.com.