Wu, Lingeer
Shen, Le http://orcid.org/0000-0002-2563-0012
Zhang, Yuelun
Zhang, Xiuhua
Huang, Yuguang
Article History
Received: 18 February 2018
Accepted: 11 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: This investigation was a retrospective hospital-based, case-control study approved by the Peking Union Medical College (PUMC) Hospital Institutional Review Board. All the data were collected from the adverse-event system in Department of Anesthesiology. No written informed consent was obtained from the participants. A verbal consent to participation in this study of each participant was obtained through a phone call during follow-up, as all the participants had been discharged when we collected the data. The study protocol was designated S-K260 and was approved on May 11th, 2017.
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