Alan D L Sihoe1. 1. 1 Department of Surgery, The Li Ka Shing Faculty of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong SAR, China ; 2 The University of Hong Kong Shenzhen Hospital, Shenzhen 518053, China ; 3 Department of Thoracic Surgery, Tongji University Shanghai Pulmonary Hospital, Shanghai 200433, China.