Placebo comparator group selection and use in surgical trials: the ASPIRE project including expert workshop (Health Technology Assessment, 2021)

(untitled) - Beard, DJ; Campbell, MK; Blazeby, JM; Carr, AJ; Weijer, C; Cuthbertson, BH; Buchbinder, R; Pinkney, T; Bishop, FL; Pugh, J; Cousins, S; Harris, I; et al.