Yang, Peirong
Chen, Gang
Wang, Peng
Zhang, Kejian
Deng, Feng
Yang, Haifeng
Zhuang, Guihua
Article History
Accepted: 25 April 2018
First Online: 5 May 2018
Compliance with ethical standards
:
: GC was involved in the development of the Chinese version of CHU9D instrument. All other authors declare that they have no conflict of interest.
: Ethical approval was granted by the Ethics Committee of Baoji Center for Disease Control and Prevention (Project No. 201601). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Written informed consent was obtained from both parents or caregivers and all individual students included in the study.