A.J. Ferreri, G.P. Dognini, C. Verona, C. Patriarca, C. Doglioni and M. Ponzoni (2007) “Re-occurrence of the CD20 molecule expression subsequent to CD20-negative relapse in diffuse large B-cell lymphoma”, Haematologica. Pavia, Italy, 92(1), pp. e1-e2. doi: 10.3324/haematol.10255.