The Philadelphia Lung Cancer Learning Community: a multi-health-system, citywide approach to lung cancer screening. - Barta JA; Erkmen CP; Shusted CS; Myers RE; Saia C; Cohen S; Wainwright J; Zeigler-Johnson C; Dako F; Wender R; Kane GC; Vachani A; et al. (JNCI cancer spectrum, 2023)