1 Department of Cardiovascular Surgery, National Hospital Organization Nagasaki Medical Center, 2-1001-1 Kubara, Omura, Nagasaki, 856-8562, Japan. [email protected].
2 Department of Cardiovascular Surgery, National Hospital Organization Nagasaki Medical Center, 2-1001-1 Kubara, Omura, Nagasaki, 856-8562, Japan.