Tohru Asai, Tomoaki Suzuki, Hiromitsu Nota, Satoshi Kuroyanagi, Takeshi Kinoshita, Noriyuki Takashima, Masato Hayakawa, Shiho Naito
Division of Cardiovascular Surgery, Department of Surgery, Shiga University of Medical Science, Seta Tsukinowa, Otsu, Shiga, Japan