Muhammad Mamdani, David N Juurlink, Alex Kopp, Gary Naglie, Peter C Austin, Andreas Laupacis et al
Mamdani M, Juurlink D N, Kopp A, Naglie G, Austin P C, Laupacis A et al.
Gastrointestinal bleeding after the introduction of COX 2 inhibitors: ecological study
BMJ 2004; 328 :1415
doi:10.1136/bmj.38068.716262.F7