Abstract
Up to now, the etiology of human gastric cancer has been unknown to a large extent. Speculations are made about dietetic influences as well as about the influence of exogenous chemical factors which may, for instance, be taken in by food. From epidemiologic and geographic pathology, we know that there is an excessive incidence of gastric cancer in, e.g., Japan, Chile, or Venezuela, whereas this type of tumor only occurs very rarely or even shows a decreasing tendency in other countries, e.g., the United States or in the Federal Republic of Germany [13]. These well-known facts from epidemiology as well as immigrant studies [1, 3] have shown us that exogenous factors obviously play the decisive role, even though they are unknown to a large extent.
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© 1979 Springer-Verlag Berlin Heidelberg
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Schmähl, D. (1979). Carcinogenic Substances and Carcinogenesis — Their Clinical Significance. In: Herfarth, C.H., Schlag, P.M. (eds) Gastric Cancer. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67368-9_4
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DOI: https://doi.org/10.1007/978-3-642-67368-9_4
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