Funding for this research was provided by:
National Key Research and Development Program of China;Key Scientific Research Projects in Colleges and Universities of Henan Province (2018YFC1002203;19A310025)
Received: 17 December 2019
Accepted: 4 June 2020
First Online: 17 June 2020
Ethics approval and consent to participate
: The study was approved by the Ethics Committee for Scientific Research and Clinical Trials of the First Affiliated Hospital of Zhengzhou University. The patients aged 16 and over signed informed consent forms. A written informed consent was obtained from the parents or legal guardians of any participant under the age of 16.
: A written informed consent for publication of medical data and/or clinical images was obtained from the parents or legal guardians for all patients under the age of 18. For patients above 18 years of age assent and written consent has been obtained for publication of medical data and /or clinical images.
: The authors declare that they have no competing interests.