Cro, S;
Kahan, BC;
Rehal, S;
Chis Ster, A;
Carpenter, JR;
White, IR;
Cornelius, VR;
(2022)
Evaluating how clear the questions being investigated in randomised trials are: systematic review of estimands.
BMJ
, 378
, Article e070146. 10.1136/bmj-2022-070146.