on behalf of the Birmingham Atrial Fibrillation in the Aged (BAFTA) investigators and Midland Research Practices Consortium (MidReC) network. Performance of stroke risk scores in older people with atrial fibrillation not taking warfarin: comparative cohort study from BAFTA trial - Hobbs, FD; Roalfe, AK; Lip, GY (Br Med J, 2011)
doi: 10.1136/bmj.d3653