Screening for the early detection of cancer.
D001943:Breast Neoplasms / Q000453:epidemiology; D002986:Clinical Trials as Topic; D003110:Colonic Neoplasms / Q000453:epidemiology; D005069:Evaluation Studies as Topic; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000453:epidemiology; D008403:Mass Screening / Q000379:methods / Q000592:standards; D009369:Neoplasms / Q000175:diagnosis / Q000453:epidemiology*; D011897:Random Allocation; D012004:Rectal Neoplasms / Q000453:epidemiology; D012107:Research Design; D013997:Time Factors; D002583:Uterine Cervical Neoplasms / Q000453:epidemiology