Funding for this research was provided by:
Foundation for the Author of National Excellent Doctoral Dissertation of the People's Republic of China (71503062)
Heilongjiang Provincial Postdoctoral Science Foundation (LBH-Z16137)
China Postdoctoral Fund (2017M611402)
the HMU Innovation Fund (2017RWZX08)
the Fundamental Research Funds for the Provincial Universities
Heilongjiang Postdoctoral Fund (LBH-Z16240)
China Medical Board Open Competition Grant (CMB-19-308)
Text and Data Mining valid from 2019-05-30
Received: 15 December 2018
Accepted: 15 May 2019
First Online: 30 May 2019
Ethics approval and consent to participate
: This study was reviewed and approved by the Ethics Committee of Harbin Medical University (Project Identification Code: HMUIRB2014012). The study protocol followed the tenets of the declaration of Helsinki. The participants were fully informed and informed consent was acquired in writing from all of the participating individuals.
: All of the authors read and approved to publish this article. No contents of this article have been published elsewhere.
: The authors declare that they have no competing interests.
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