P675: IMATINIB THERAPY IN PREVIOUSLY UNTREATED CHRONIC MYELOID LEUKAEMIA PATIENTS WHO ACHIEVE MMR AFTER 12 MONTHS THERAPY WITH DASATINIB: A STRATEGY TO AVOID LONG TERM OFF TARGET T... oleh Lucy Pemberton, Katrina Sharples, Yujin Kim, Emma-Jane Mcdonald, Humphrey Pullon, Bart Baker, Merit Hanna, Gordon Royle, Shahidul Islam, Victoria Campion, Michael Findlay, Peter Browett