Affiliation: | aDepartment of General Thoracic Surgery, Maebashi Red Cross Hospital, Maebashi, Gunma, Japan;bDepartment of Respiratory Medicine, Maebashi Red Cross Hospital, Maebashi, Gunma, Japan;cDivision of Thoracic and Visceral Organ Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan |