title: Is there a relationship between risk factors for oral clefts?
authors.forename: Joanna S
authors.initials: JS
authors.lastname: Zeiger
authors.forename: Terri H
authors.initials: TH
authors.lastname: Beaty
mesh_terms: D001722:Birth Order; D002971:Cleft Lip / Q000209:etiology* / Q000235:genetics / Q000517:prevention & control; D002972:Cleft Palate / Q000209:etiology* / Q000235:genetics / Q000517:prevention & control; D015986:Confounding Factors, Epidemiologic; D004781:Environmental Exposure; D005260:Female; D005492:Folic Acid / Q000627:therapeutic use; D006710:Homocysteine / Q000097:blood / Q000633:toxicity; D006801:Humans; D007231:Infant, Newborn; D008431:Maternal-Fetal Exchange; D016017:Odds Ratio; D011247:Pregnancy; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects; D012959:Socioeconomic Factors
chemical_list: D006710:Homocysteine; D005492:Folic Acid