227 CD71+ ERYTHROPROGENITOR CELLS FROM PATIENTS WITH MYELODYSPLASTIC SYNDROMES DISPLAY DISTURBED REGULATION OF ERYTHROPOIESIS STIMULATING ERYTHROFERRONE (ERFE) IN ASSOCIATION WITH DIFFERENTIAL PROGNOSTIC SIGNIFICANCE. Issue 1 (April 2015) - Mossner, M.; Stöhr, A.; Nolte, F.; Jann, J.C.; Fey, S.; Nowak, V.; Obländer, J.; Pressler, J.; Baldus, C.D.; Schulze, T.J.; Neumann, M.; Nowak, D.; et al.