title: Intramuscular injection and coagulation defects.
mesh_terms: D000368:Aged; D000925:Anticoagulants / Q000009:adverse effects*; D001778:Blood Coagulation Disorders; D006406:Hematoma / Q000209:etiology; D006493:Heparin / Q000009:adverse effects; D006801:Humans; D007273:Injections, Intramuscular / Q000009:adverse effects*
chemical_list: D000925:Anticoagulants; D006493:Heparin