Elie A Akl, Matthias Briel, John J You, Xin Sun, Bradley C Johnston, Jason W Busse et al
Akl E A, Briel M, You J J, Sun X, Johnston B C, Busse J W et al.
Potential impact on estimated treatment effects of information lost to follow-up in randomised controlled trials (LOST-IT): systematic review
BMJ 2012; 344 :e2809
doi:10.1136/bmj.e2809