Funding for this research was provided by:
Tianjin Research Program of Application Foundation and Advanced Technology (14CYBJC29800)
Science and Technology Innovation Fund Projects of Tianjin Institute of Urology (MNYB201503)
Article History
Received: 8 January 2018
Accepted: 13 February 2018
First Online: 21 March 2018
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This study has been approved by The Second Hospital of Tianjin Medical University’s ethics committee and has been performed according to the ethical standards laid down in the 1964 Declaration of Helsinki.
: Informed consent was obtained from all individual participants included in the study.