Funding for this research was provided by:
National Natural Science Foundation of China (81171996, 81272289, 8187101951)
The First Affiliated Hospital of Harbin Medical University Science Foundation (2015B011)
Text and Data Mining valid from 2019-01-22
Received: 13 June 2018
Accepted: 1 January 2019
First Online: 22 January 2019
Ethics approval and consent to participate
: This study was conducted at the Department of Urology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China. This research study was approved by the Institutional Review Board of Harbin Medical University, and the subjects provided informed consent.
: Not applicable.
: The authors declare that they have no competing interests exist.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.