BMJ · 1992 · 253 citations · 51 references
After a first stroke atrial fibrillation was not associated with a definite excess risk of recurrent stroke, either within 30 days or within the first few years. Survivors with and without atrial fibrillation had a clinically important absolute risk of further serious vascular events.
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Richard Peto, Malcolm C. Pike, P. Armitage et al. · British Journal of Cancer · 1976 · 2.3K citations · Full text
Retrospective Cohort Study, Health Sciences, Clinical Trial Analysis +11