Second-To-Fourth Digit Ratio (2D:4D) in Breast Cancer: A Systematic Review. | ClinicLens

The second-to-fourth digit ratio (2D:4D) is considered an indirect marker of prenatal sex hormone exposure and has been investigated as a potential indicator of susceptibility to hormone-related diseases, including breast cancer. The purpose of this systematic review is to evalua

Medical Literature · Updated 2026-08-10

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