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2. American Lung Association. Guidance on CT lung cancer screening. Available at: http://www.lung.org/about-us/our-impact/top-stories/guidance-on-ct-lung-cancer.html. Accessed August 7, 2014.
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4. Screening for lung cancer: diagnosis and management of lung cancer, 3rd ed: American College of Chest Physicians evidence-based clinical practice guidelines;Detterbeck;Chest,2013
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