McIntyre, Matthew H The development of sex differences in digital formula from infancy in the Fels Longitudinal Study. [electronic resource] - Proceedings. Biological sciences Jul 2005 - 1473-9 p. digital Publication Type: Comparative Study; Journal Article ISSN: 0962-8452 Standard No.: 10.1098/rspb.2005.3100 doi Subjects--Topical Terms: AdolescentAnalysis of VarianceAnthropometryChildChild, PreschoolDiscriminant AnalysisFemaleFingers--diagnostic imagingHumansInfantMaleOhioPrincipal Component AnalysisRadiographySex Characteristics