Popis: |
BACKGROUND: This was an observational study of Japanese participants who underwent low-dose computed tomographic (LDCT) lung cancer screening between February 2004 and March 2012, to evaluate the lung cancers in never-smokers and smokers. METHODS: The study population consisted of a total of 12,114 subjects [never-smokers, 6,021 (49.70%); smokers with |