- The4-Dscanshowsmovementoftwinsinsidethewomb.Thefoetusespushagainsteachotherinaconstantstruggleforspaceandresources.Therealityisthatithasbeenaroundforaslongasmalefoetusesmissedoutontheirsuffi-cientshareofmalehormones.Ithasalsobeenblamedforagenderimbal...
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