Deletion of sequences flanking the t(9;22) breakpoint: A secondary genetic event associated with loss of cytogenetic response to interferon in a Philadelphia-positive chronic myeloid leukaemia patient - Arranz E; Gil-Fernández J; Ramiro S; Blas C; Renedo M; Alegre A; Escudero A; Fernández-Rañada J (British Journal Of Haematology, 2002)