Richards, David A, Bazeley, Patricia, Borglin, Gunilla, Craig, Peter, Emsley, Richard, Frost, Julia, Hill, Jacqueline, Horwood, Jeremy, Anne Hutchings, Hayley, Jinks, Clare, Montgomery, Alan, Moore, Graham, Plano Clark, Vicki L, Tonkin-Crine, Sarah, Wade, Julia, Warren, Fiona C, Wyke, Sally, Young, Bridget, O'Cathain, Alicia, "Integrating quantitative and qualitative data and findings when undertaking randomised controlled trials", BMJ Open, 2019