title: Letter: Iatrogenic bleeding.
mesh_terms: D000328:Adult; D001780:Blood Coagulation Tests; D001782:Blood Donors; D006470:Hemorrhage / Q000139:chemically induced*; D006493:Heparin / Q000008:administration & dosage / Q000009:adverse effects; D006801:Humans; D007049:Iatrogenic Disease; D008297:Male
chemical_list: D006493:Heparin