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Eckardt, K. U. and Dittmer, J. and Neumann, R. and Bauer, C. and Kurtz, Armin (1990) Decline of erythropoietin formation at continuous hypoxia is not due to feedback inhibition. The American journal of physiology. Renal physiology 258 (5 Pt 2), F1432-F1437.
Kurtz, Armin and Eckardt, Kai-Uwe and Neumann, R. and Kaissling, B. and Le Hir, M. and Bauer, Christian (1989) Site of erythropoietin formation. Contributions to nephrology 76, pp. 14-20.