title: Patients with atrial fibrillation have nearly twice the risk of stroke in first 30 days of starting warfarin.
authors.affiliation: London.
authors.forename: Susan
authors.initials: S
authors.lastname: Mayor
mesh_terms: D000925:Anticoagulants / Q000627:therapeutic use*; D001281:Atrial Fibrillation / Q000150:complications*; D006801:Humans; D012307:Risk Factors; D020521:Stroke / Q000209:etiology / Q000517:prevention & control*; D013997:Time Factors; D014859:Warfarin / Q000627:therapeutic use*
chemical_list: D000925:Anticoagulants; D014859:Warfarin