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Here is another speculative discourse on the etiology of cancer. The concept is that cancer is the biologic sequel of a disturbance of the three regulative factors of cell life; namely, the intracellular life force, the lack or abnormality of the hormonal control, and the trophic vegetative innervation. No experimental evidence is presented.
Der Krebs, seine Entstehung und Erklärung: Eine biologische Studie.. JAMA. 1932;99(18):1536. doi:10.1001/jama.1932.02740700076047