Funding for this research was provided by:
the National Natural Science Foundation of China (No.81260058, No.81760080)
Natural Science Foundation of Inner Mongolia Autonomous Region (No.2015BS0811)
"Science and Technology Million" project of Inner Mongolia Medical University (No. YKD2016KJBW003)
Higher School Science Research Project of Inner Mongolia Autonomous Region (No.NJZY14137)
Article History
Received: 14 August 2017
Accepted: 3 April 2018
First Online: 16 April 2018
Ethics approval and consent to participate
: Written informed consents were obtained from all participants. The study was performed in accordance with the Declaration of Helsinki and approved by the Ethical Committee of Affiliated Hospital of Inner Mongolia Medical University.
: The authors declare that they have no competing interests.
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