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Authors
Xue, Sheng https://orcid.org/0000-0003-4578-9677
Zhu, Wenjie
Liu, Dacheng
Su, Zhe
Zhang, Liwei
Chang, Qing
Li, Peifeng
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Funding
Funding for this research was provided by:
Natural Science Foundation of Shandong Province (ZR2017BH066)
National Natural Science Foundation of China (81741173, 31430041)
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Article History
Received: 26 September 2018
Accepted: 22 April 2019
First Online: 15 May 2019
Ethics approval and consent to participate
: The study was conducted according to the Declaration of Helsinki. The ethical committee of Affiliated Hospital of Qingdao University approved the study design. All participants gave written consent to participate.
: All participants gave written consent to publish.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
