Additional file 1: of The INVEST project: investigating the use of evidence synthesis in the design and analysis of clinical trials ClaytonGemma SmithIsabelle HigginsJulian MihaylovaBorislava ThorpeBenjamin CiceroRobert LokugeKusal FormanJulia TierneyJayne WhiteIan SharplesLinda JonesHayley 2017 Shows the INVEST survey. (DOCX 130 kb)