Funding for this research was provided by:
Project of Science and Technology Department of Sichuan Province (2018SZ0118)
Project of Sichuan Provincial Health Department, Dual-source CT dual-energy urography and urolithiasis analysis in the early prevention and treatment of urolithiasis (ZH2017-101)
1.3.5 project for disciplines of excellence, West China Hospital, Sichuan University ((ZY2016104, ZYJC18015, ZYGD18011)
Article History
Received: 3 March 2020
Accepted: 24 April 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: The study protocol is compliant with ethical standards and approved by the local ethics committee (West China Hospital, Sichuan University). Due to the retrospective nature of the study, informed consent was waived.
: Not applicable.
: Authors of this article as well as all the included studies declare that they have no conflict of interest.