Funding for this research was provided by:
Natural Science Foundation of Hunan Province (2017JJ2377)
Article History
Received: 20 December 2018
Accepted: 4 June 2019
First Online: 14 June 2019
Ethics approval and consent to participate
: This study was completed in compliance with the Declaration of Helsinki following medical protocol and ethics. The study was approved by the regional Ethical Review Board of XiangYa Hospital Central South University (Number: 2017121128) and informed consent was obtained from all patients or parents or legal guardians.
: Not applicable.
: The authors declare that they have no competing interests.