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The Fifth Alvarez Lecture (founded, 1928, by Dr. Frank Smithies) delivered at the annual session of the American Gastro-Enterological Association at Atlantic City, April 30, 1934.
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Hegner, R. Pathogenic protozoa in the united states. American Journal of Digestive Diseases and Nutrition 1, 456–462 (1934). https://doi.org/10.1007/BF02998954
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DOI: https://doi.org/10.1007/BF02998954