Funding for this research was provided by:
National Natural Science Foundation of China (81603138)
Special Fund for Guiding Local Science and Technology Development by the Central Government of Anhui Province (2017070802d149)
Text and Data Mining valid from 2019-11-12
Received: 15 May 2019
Accepted: 20 September 2019
First Online: 12 November 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Ethics Committee of The First Affiliated Hospital of An Hui Medical University and according to the Declaration of Helsinki. Informed consent was also obtained from each participants.
: Not applicable.
: The authors declare that they have no competing interests.