RoB 2: a revised tool for assessing risk of bias in randomised trials
J. Sterne, J. Savović, M. Page, R. Elbers, N. Blencowe, I. Boutron, C. Cates, Hung-Yuan Cheng, M. Corbett, S. Eldridge, J. Emberson, M. Hernán, S. Hopewell, A. Hrõbjartsson, D. Junqueira, P. Jüni, J. Kirkham, T. Lasserson, Tianjing Li, A. McAleenan, B. Reeves, S. Shepperd, I. Shrier, L. Stewart, K. Tilling, I. White, P. Whiting, J. Higgins
British medical journal