The importance of co-located, high intensity smoking cessation support within lung cancer screening: Findings from the Process Evaluation of the Yorkshire Enhanced Stop Smoking study

G McCutchan, HD Quinn-Scoggins, H Tong, P Smith, SL Quaife, MEJ Callister, R Thorley, DR Baldwin, RJ Beeken, H Copeland, PAJ Crosbie, S Lewis, S Rogerson, Qi Wu, RL Murray, K Brain