title: Letter: Uterine contractions due to heparin.
mesh_terms: D005260:Female; D006493:Heparin / Q000009:adverse effects*; D006801:Humans; D009119:Muscle Contraction / Q000187:drug effects; D011247:Pregnancy; D014599:Uterus / Q000187:drug effects*
chemical_list: D006493:Heparin