The long term outcome of the patients with chronic myeloid leukemia (CML) who have achieved complete cytogenetic response (CCgR) to interferon-alpha (IFN alpha). A collaborative Eu... by Bonifazi, F, De Vivo, A, Rosti, G, Guilhot, F, Guilhot, J, Trabacchi, E, Hehlmann, R, Hochhaus, A, Shepherd, P, Steegmann, J, Kluin-Nelemans, H, Thaler, J, Simonsson, B, Louwagie, A, Reiffers, J, Mahon, F, Montefusco, E, Alimena, G, Hasford, J, Richards, S, Saglio, G, Testoni, N, Martinelli, G, Tura, S, Baccarani, M