Product Search Search Effective Health Care website Submit search Search Tip: Use double quotes around phrases to rank exact matches higher in the result list. 4 results Testing of CYP2C19 Variants and Platelet Reactivity for Guiding Antiplatelet Treatment Systematic Review Archived September 25, 2013 Stroke Prevention in Atrial Fibrillation Systematic Review Archived August 23, 2013 Pharmacologic and Mechanical Prophylaxis of Venous Thromboembolism Among Special Populations Systematic Review Archived May 29, 2013 Additional Patient Outcomes and Alternative Pathways in Evaluations of Testing Research Report November 9, 2009