title: In response to Sun et al.
authors.forename: J K
authors.initials: JK
authors.lastname: Chan
mesh_terms: D020680:Bronchoscopes; D001999:Bronchoscopy / Q000295:instrumentation*; D005260:Female; D005336:Fiber Optic Technology; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation*; D008297:Male