The detection of Klinefelter's syndrome at birth.
D000782:Aneuploidy; D002467:Cell Nucleus; D003456:Cryptorchidism / Q000175:diagnosis; D005500:Follow-Up Studies; D005817:Genetic Counseling; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000175:diagnosis*; D007621:Karyotyping; D007713:Klinefelter Syndrome / Q000175:diagnosis*; D008297:Male; D008403:Mass Screening; D008722:Methods; D010641:Phenotype; D010808:Physical Examination; D013997:Time Factors