Current status and issues of uniportal video-assisted thoracic surgery in Japan

Department of Thoracic Surgery, Nippon Medical School Chiba Hokusoh Hospital, Inzai, Chiba, Japan; Division of Thoracic Surgery, Nippon Medical School, Tokyo, Japan Contributions: (I) Conception and design: All authors; (II) Administrative support: None; (III) Provision of study materials or patients: K Hirai; (IV) Collection and assembly of data: K Hirai; (V) Data analysis and interpretation: All authors; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors. Correspondence to: Kyoji Hirai, MD. Department of Thoracic Surgery, Nippon Medical School Chiba Hokusoh Hospital, 1715 Kamakari, Inzai, Chiba 270-1674, Japan. Email: ky-hirai@nms.ac.jp.