Zhou, Hao
Chen, Zhihe
Zhao, Weiqing
Liu, Ye
Cui, Yuxia
Funding for this research was provided by:
Doctor Funding of Guizhou Provincial People’s Hospital (GZSYBS [2016]07)
Article History
Received: 4 June 2018
Accepted: 14 November 2019
First Online: 22 November 2019
Ethics approval and consent to participate
: The study was performed in accordance with the Declaration of Helsinki of the World Medical Association (WMA). The study protocol was approved by the Guizhou Provincial People’s Hospital Ethics Committee, and all parents/guardians gave their written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.