What causes the excess left-handedness in twins?
James
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WH
D005260:Female; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D011247:Pregnancy / Q000378:metabolism / Q000523:psychology*; D015995:Prevalence; D013739:Testosterone / Q000378:metabolism*; D014427:Twins
D013739:Testosterone