Liu, Yanli
Wang, Jiashuo
Zhong, Shan
Article History
Received: 17 December 2019
Accepted: 30 March 2020
First Online: 8 April 2020
Ethics approval and consent to participate
: This retrospective study was approved by the Institutional Ethics Committee of Children’s Hospital of Nanjing Medical University and was conducted using the data obtained from Picture Archiving and Communication System (PACS) database and Operation Anesthesia Information System (OAIS) database. Informed consent was waived by our IEC based on minimal harm to the patient.
: Not Applicable.
: The authors declare that they have no competing interests.