Funding for this research was provided by:
National Natural Science Foundation of China (31770837)
Key Research Project of Shandong Province (2016GSF201217)
Qingdao, Shinan District Science and Technology Development Project Fund (2016-3-016-YY)
Qingdao People’s Livelihood Science and technology plan (18-6-1-68-nsh)
Received: 24 October 2018
Accepted: 23 January 2019
First Online: 6 February 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Qingdao municipal hospital (approval No: 2016临审字第17号). All patients and healthy persons included in this study provided written informed consent.
: All patients and healthy persons included in this study provided written informed consent.
: The authors declare that they have no competing interests.
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