Received: 30 March 2019
Accepted: 30 October 2019
First Online: 11 November 2019
Ethics approval and consent to participate
: The study was approved by the China Medical University’s Institutional Review Board (IRB #2017PS049K) and written informed consent was obtained from all patients’ guardians participating in the trial.
: Not applicable.
: The authors declare that they have no competing interests.