Article History
Received: 27 April 2019
Accepted: 20 August 2019
First Online: 31 August 2019
Change Date: 13 November 2019
Change Type: Correction
Change Details: Following publication of the original article [1], the authors reported that there has been a mistake regarding the unit of duration of surgery, consciousness recovery time, and extubation time in Table 1; the correct unit is minute.
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board at Peking University Cancer Hospital (no. 2018YJZ74). Written informed consent was obtained from all participants included in the study.
: Not applicable.
: The authors declare that they have no competing interests.