title: Can studies of harm be harmful?
authors.forename: Joel G
authors.initials: JG
authors.lastname: Ray
mesh_terms: D015986:Confounding Factors, Epidemiologic; D005260:Female; D005313:Fetal Death; D005317:Fetal Growth Retardation / Q000139:chemically induced; D005493:Folic Acid Antagonists / Q000009:adverse effects*; D006801:Humans; D018811:Maternal Exposure; D019370:Observation; D010920:Placenta / Q000187:drug effects; D011225:Pre-Eclampsia / Q000139:chemically induced; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology; D012107:Research Design
chemical_list: D005493:Folic Acid Antagonists