Incidence of sex chromosomal anomalies in newborn infants.
D000367:Age Factors; D000650:Amnion / Q000166:cytology; D002610:Cheek; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology*; D008297:Male; D009061:Mouth Mucosa / Q000166:cytology; D012621:Seasons; D012729:Sex Chromosome Aberrations / Q000453:epidemiology* / Q000209:etiology; D012737:Sex Factors