title: Anticoagulation: held too long.
mesh_terms: D000368:Aged; D000925:Anticoagulants / Q000008:administration & dosage*; D016145:Endoscopy, Digestive System; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008943:Mitral Valve / Q000601:surgery*
chemical_list: D000925:Anticoagulants