Funding for this research was provided by:
Young Scientists Fund (81500525)
Natural Science Foundation of Liaoning Province (2014021046)
Received: 3 November 2018
Accepted: 12 June 2019
First Online: 4 July 2019
Ethics approval and consent to participate
: All patients received written information and provided informed consent. The present study applied the recommendations outlined in the Declaration of Helsinki Principles and was approved by the Ethics Committee and the Research Board of the First Affiliated Hospital of China Medical University.
: Not applicable.
: The authors declare that they have no competing interests.