Ethics approval and consent to participate
Cancer
CANCER
All procedures performed in studies involving human participants were 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. The study was approved by the Ethical Committee of National Cancer Center/ National Clinical Research Center for Cancer/ Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, (15–134/1061). Clinical trial information: NCT03443661. Written informed consent was obtained from all individual participants included in the study.