Takashi Murakami (MD, PhD)2, Yosuke Takahashi (MD, PhD)3,
Toshihiko Shibata (MD, PhD)3, Minoru Yoshiyama (MD, PhD)4
Department of Cardiology, Osaka City General Hospital, Osaka, Japan
2 Department of Cardiovascular Surgery, Osaka City General Hospital, Osaka, Japan
Department of Cardiovascular Surgery, Osaka City University, Osaka, Japan
Department of Cardiology, Osaka City University, Osaka, Japan
Word count: structured abstract, 240 words; text, authors’ contributions, references and figure legends, 2707 words.