When will it change?
D054598:Blue Cross Blue Shield Insurance Plans; D002986:Clinical Trials as Topic; D006801:Humans; D008175:Lung Neoplasms / Q000175:diagnosis* / Q000401:mortality / Q000473:pathology; D008403:Mass Screening; D011237:Predictive Value of Tests; D011859:Radiography; D012907:Smoking; D013183:Sputum; D013534:Survival; D013673:Technology Assessment, Biomedical; D014481:United States