Sex chromatin in the premature.
D001724:Birth Weight; D002610:Cheek; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D008297:Male; D008722:Methods; D009061:Mouth Mucosa / Q000166:cytology; D012728:Sex Chromatin; D012732:Sex Determination Analysis