119 Estimating the health benefits of introducing ctDNA next generation sequencing to the diagnostic pathway for advanced lung cancer: A modelling study. - Navani, Neal; van Doornewaard, Alexander; Schneider, Verena; Marson Smith, Phoebe; Shah, Riyaz; Greystoke, Alastair; Krebs, Matthew; Scott, Sophie; Faull, Iris; Adams, Elisabeth; Popat, Sanjay (Lung Cancer (01695002), 2024)