Murray RL, Brain K, Britton J, Quinn-Scoggings H, Lewis S, McCutchan G, Quaife S, Wu Q, Ashurst A, Baldwin D, Crosbie P, Neal R, Parrott S, Rogerson S, Thorley R, Callister M. Yorkshire Enhanced Stop Smoking (YESS) study: a protocol for a randomised controlled trial to evaluate the effect of adding a personalised smoking cessation intervention to a lung cancer screening programme. BMJ Open 2020;10:e037086. doi: 10.1136/bmjopen-2020-037086