Searching for XYY males through electrocardiograms.
D000328:Adult; D002648:Child; D002903:Chromosomes, Human, 19-20; D002904:Chromosomes, Human, 21-22 and Y; D004562:Electrocardiography; D006801:Humans; D007621:Karyotyping; D008297:Male; D012729:Sex Chromosome Aberrations