Li, Fei
Liu, Peipei
Guo, Ya
Han, Zhenliang
Liu, Yedan
Wang, Yuanyuan
Song, Long
Cheng, Jianguo
Chen, Zongbo
Funding for this research was provided by:
National Natural Science Foundation of China (31171212)
Article History
Received: 11 October 2017
Accepted: 6 February 2018
First Online: 16 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by the Clinical Research Ethics Committee of the Affiliated Hospital of Qingdao University, China.
: Informed consent was obtained from each child’s guardian.