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Hobbs FD, Roalfe AK, Lip GY, Fletcher K, Fitzmaurice DA, Mant J, Birmingham Atrial Fibrillation in the Aged Investigators and Midland Research Practices Consortium Network Birmingham Atrial Fibrillation in the Aged Investigators and Midland Research Practices Consortium Network,
Performance of stroke risk scores in older people with atrial fibrillation not taking warfarin: comparative cohort study from BAFTA trial.
BMJ. 2011 Jun 23;342:d3653. doi: 10.1136/bmj.d3653