title: Reply to Ng et al.
authors.affiliation: Department of Thoracic Surgery, First Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Yunhai
authors.initials: Y
authors.lastname: Yang
authors.affiliation: Department of Thoracic Surgery, First Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Feichao
authors.initials: F
authors.lastname: Bao
authors.affiliation: Department of Thoracic Surgery, First Hospital, College of Medicine, Zhejiang University, Hangzhou, China.
authors.forename: Zhehao
authors.initials: Z
authors.lastname: He
authors.affiliation: Department of Thoracic Surgery, First Hospital, College of Medicine, Zhejiang University, Hangzhou, China hujian_med@163.com.
authors.forename: Jian
authors.initials: J
authors.lastname: Hu
mesh_terms: D006801:Humans; D008297:Male; D011013:Pneumonectomy / Q000295:instrumentation* / Q000379:methods*; D020775:Thoracic Surgery, Video-Assisted / Q000295:instrumentation* / Q000379:methods*
keywords: Flexible video-endoscope; Single port; Video-assisted thoracic surgery