title: Influence of birth rank and parental age on congenital and colobomatous defects (a clinical investigation).
mesh_terms: D000293:Adolescent; D000328:Adult; D001722:Birth Order; D002386:Cataract / Q000151:congenital / Q000235:genetics; D002648:Child; D002675:Child, Preschool; D003103:Coloboma / Q000453:epidemiology* / Q000235:genetics; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008423:Maternal Age; D010331:Paternal Age; D013223:Statistics as Topic