Wang, Yan
Yu, Xiaojing
Wang, Lihua
Ma, Weiyuan
Sun, Qing
Funding for this research was provided by:
Shandong University (2014QLKY34)
Article History
First Online: 22 August 2018
Compliance with Ethical Standards
:
: This study was approved by the Research Ethics Committee of Qilu Hospital, Shandong University (No. KYLL 2015 108) and performed in accordance with the principles of the 1964 Declaration of Helsinki and its later amendments.
: Informed consent was obtained from all individual participants included in this study.
: The authors declare that they have no conflict of interest.
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