Meta-analysis of randomized controlled trials and adjusted observational results of use of clopidogrel, aspirin, and oral anticoagulants in patients undergoing percutaneous coronary intervention. - D'Ascenzo F; Taha S; Moretti C; Omedè P; Grossomarra W; Persson J; Lamberts M; Dewilde W; Rubboli A; Fernández S; Cerrato E; Meynet I; et al. (The American journal of cardiology, 2015)