Zhang, Xiaowei
Wang, Xianbin
Wang, Aiyu
Li, Qian
Zhou, Ming
Article History
Received: 6 September 2018
Accepted: 13 February 2019
First Online: 22 February 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: 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. Ethics approval (approval no. SDU06384) was approved by the Ethics Committee of Central Hospital of Zibo, Affiliated with Shandong University. This article does not contain any studies with animals performed by any of the authors. The informed consent for participation was obtained from all patients and their parents who participated in this study in an appropriate method.
: Written informed consent was obtained from all patients and their parents who participated in this study.