title: Ethical problems of screening for neural-tube defects.
mesh_terms: D000015:Abnormalities, Multiple; D000649:Amniocentesis; D000653:Amniotic Fluid / Q000032:analysis*; D003937:Diagnosis, Differential; D004677:Encephalocele / Q000175:diagnosis*; D005260:Female; D006801:Humans; D009333:Neck / Q000002:abnormalities*; D011247:Pregnancy; D000509:alpha-Fetoproteins / Q000032:analysis*
chemical_list: D000509:alpha-Fetoproteins