PM2.5, O3 and survival gains from China's clean air actions among patients with lung cancer: a 20-year registry-based cohort study in Beijing.
BACKGROUND In recent years, China has experienced declining fine particulate matter (PM2.5) levels but rising ozone (O3) levels. We aimed to examine the independent and joint associations of long-term exposure to PM2.5 and O3 with all-cause mortality among patients with lung cancer and to estimate potential survival ga...