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Objective To discuss the epidemic strength of cardia and distant stomach cancers in the high risk region of esophageal cancer along the south Taihang mountain such as in Shexian, Linxian, and Cixian Counties, and to clarify the tasks for the control of upper gastrointestinal tract cancer as a whole in the region. Methods Comparisons of incidence and mortality rates of esophageal, cardia and stomach...
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