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. Author manuscript; available in PMC: 2017 Feb 1.
Published in final edited form as: J Thorac Oncol. 2016 Feb;11(2):194–202. doi: 10.1016/j.jtho.2015.10.016

Figure 1.

Figure 1

Subgroup distribution by frequency of known risk factors in lung cancer patients who were <81 years old, diagnosed 1997-2011

(A) Community Cohort;

(B) Hospital Cohort.