Personalised Lung Cancer Screening (PLuS) study to assess the importance of coexisting chronic conditions to clinical practice and policy: protocol for a multicentre observational... oleh Yi Guo, Dongyu Zhang, Rafael Meza, Jihyoun Jeon, Dejana Braithwaite, Gerard A Silvestri, Michael K Gould, Jiang Bian, Bruno Hochhegger, Shama D Karanth, Christopher G Slatore, Martin Tammemagi, Mattthew Schabath, Meghann Wheeler, Frederic J Kaye