Incidence of naso-lacrimal atresia in infants of primiparae.
D000015:Abnormalities, Multiple / Q000453:epidemiology; D005260:Female; D006801:Humans; D007765:Lacrimal Apparatus / Q000002:abnormalities*; D007767:Lacrimal Duct Obstruction / Q000453:epidemiology* / Q000209:etiology / Q000235:genetics; D008297:Male; D009301:Nasolacrimal Duct / Q000002:abnormalities*; D010298:Parity; D011247:Pregnancy