title: Cytogenetic study of 1,633 cases.
mesh_terms: D000026:Abortion, Habitual / Q000235:genetics; D000568:Amenorrhea / Q000235:genetics; D002869:Chromosome Aberrations; D025063:Chromosome Disorders; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000235:genetics; D007621:Karyotyping; D008297:Male; D011247:Pregnancy; D012730:Sex Chromosomes