@misc{indiciaeff9ed9e723e3, title = {Clinical inquiries. Does combining aspirin and warfarin decrease the risk of stroke for patients with nonvalvular atrial fibrillation?}, author = {Sandy L Robertson and Jill Byerly Mayer and Ruth Guthmann}, year = {2004}, url = {https://pubmed.ncbi.nlm.nih.gov/15251100/}, note = {Source identifier: 15251100} }