Trial Forge Guidance 2 : how to decide if a further Study Within A Trial (SWAT) is needed

Treweek, S, Bevan, S, Bower, P, Briel, M, Campbell, M, Christie, J, Collett, C, Cotton, S, Devane, D, El Feky, A, Galvin, S, Gardner, H, Gillies, K, Hood, K, Jansen, J, Littleford, R, Parker, A, Ramsay, C, Restrup, L, Sullivan, F, Torgerson, D, Tremain, L, von Elm, E, Westmore, M, Williams, H, Williamson, P R & Clarke, M 2020, 'Trial Forge Guidance 2 : how to decide if a further Study Within A Trial (SWAT) is needed', Trials, vol. 21, 33. https://doi.org/10.1186/s13063-019-3980-5