Use of aspirin to reduce risk of initial vascular events in patients at moderate risk of cardiovascular disease (ARRIVE): a randomised, double-blind, placebo-controlled trial por Gaziano, J, Brotons, C, Coppolecchia, R, Cricelli, C, Darius, H, Gorelick, P, Howard, G, Pearson, T, Rothwell, P, Ruilope, L, Tendera, M, Tognoni, G, Committee, A