91 IRON CHELATION AND VITAMIN-D3 IN COMBINATION WITH AZACITIDINE IMPROVES TREATMENT RESPONSE IN 19 HIGH RISK MYELODYSPLASTIC SYNDROMES AFTER AZACITIDINE FAILURE. (April 2015) - Brechemier, D.; Comont, T.; Bertoli, S.; Dutertre, M.; Recher, C.; Adoue, D.; Beyne-Rauzy, O.