Hu, Xiaosong
Peng, Bangtian http://orcid.org/0000-0002-3240-0362
Zhang, Yanwei
Ai, Feng
Zheng, Jiayong
Article History
Received: 6 May 2018
Accepted: 1 September 2018
First Online: 8 October 2018
Compliance with Ethical Standards
:
: All authors declare that they have no conflicts of interest.
: The study was approved by the Medical Ethics Committee of the Henan Provinces of PeopleĀ“s Hospital. All procedures performed in the study involving human participants were in accordance with the ethical standards of the Institutional Medical Ethics Committee and with the 1964 Helsinki declaration and its later amendments.
: Informed consent was obtained from the parents of all individual participants included in the study.