Transperitoneal vs retroperitoneal laparoscopic radical nephrectomy: a double-arm, parallel-group randomized clinical trial.

"Declarations Ethics approval and consent to participateThis study involving human participants was in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. This study received the Lanzhou University Second Hospital Ethical Committee approval (2017A-054). Informed consent of all subjects or their legal guardians has been obtained for this study. All participants had signed the written informed consent and voluntarily participated in the trial. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests. "

"Funding This study was supported by the Special fund project for doctoral training program of Lanzhou University Second Hospital (Grant No.YJS-BD-14) and the Natural Science Foundation of Gansu Province (Grant No.22JR5RA964)."

"Trial registration Chinese Clinical Trial Registry (https://www.chictr.org.cn/showproj.html?proj=24400), identifier: ChiCTR1800014431, date: 13/01/2018."