The association between mammographic density and breast cancer risk in Chinese women: a systematic review and meta-analysis.

"Declarations Ethics approval and consent to participateNot applicable. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This project was supported by the Clinical Scientist Training Program of Shenzhen People’s Hospital (SYWGSCGZH202202)."

"This systematic review and meta-analysis was registered in PROSPERO (registration number CRD42021268523). Two independent reviewers (S.B. and D.S.) with comparable levels of experience conducted this study, including the processes of literature screening and quality assessment in accordance with the PRISMA guidelines []. Consensus between the two investigators or discussion with a third reviewer (XS.L.) was utilized to resolve disagreements. Interobserver consistency was evaluated by percentage agreement between the reviewers and Cohen’s kappa, see Supplementary material : Appendix A."