title: Food frequency questionnaires: Small associations and large errors.
authors: Adele H
authors: AH
authors: Hite
mesh_terms: D018798:Anemia, Iron-Deficiency / Q000150:complications*; D016640:Diabetes, Gestational / Q000097:blood*; D004034:Diet Surveys / Q000592:standards*; D005260:Female; D006801:Humans; D007501:Iron / Q000008:administration & dosage*; D015596:Nutrition Assessment; D011247:Pregnancy / Q000097:blood*; D011795:Surveys and Questionnaires / Q000592:standards*
chemical_list: D007501:Iron