title: Nitrous oxide in early pregnancy.
mesh_terms: D000769:Anesthesia, Inhalation / Q000009:adverse effects*; D000773:Anesthesia, Obstetrical / Q000009:adverse effects*; D004622:Embryo, Mammalian / Q000187:drug effects*; D005260:Female; D006801:Humans; D009609:Nitrous Oxide / Q000009:adverse effects*; D011247:Pregnancy
chemical_list: D009609:Nitrous Oxide