Is the Second to Fourth Digit Ratio (2D:4D) a Biomarker of Sex-Steroids Activity?

Autors:
Vincenzo de Sanctis, MD, Ashraf T Soliman, MD, PhD, FRCP, Heba Elsedfy, MD, Nada Soliman, MS, Rania Elalaily, MD, Salvatore Di Maio, MD

Is the Second to Fourth Digit Ratio (2D:4D) a Biom

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