title: Epidemiological and aetiological aspects of cleft lip and palate--a study of 2037 patients.
mesh_terms: D002675:Child, Preschool; D002971:Cleft Lip / Q000453:epidemiology* / Q000209:etiology; D002972:Cleft Palate / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D012737:Sex Factors; D013188:Sri Lanka