Affiliation: | (1) Division of Cardiovascular Surgery, Takarazuka Municipal Hospital, 4-5-1 Kohama, Takarazuka, 665-0827 Hyogo, Japan;(2) Division of General Thoracic Surgery, Takarazuka Municipal Hospital, 4-5-1 Kohama, Takarazuka, 665-0827 Hyogo, Japan;(3) Division of Chest Surgery, Osaka Police Hospital, Osaka, Japan |