Incidence of thrombotic complications in adult patients with acute lymphoblastic leukaemia receiving L-asparaginase during induction therapy: a GIMEMA retrospective study - Gugliotta, L; Mazzucconi, M G; Leone, G; Mattioli Belmonte, M; Defazio, D; Annino, L; Tura, S; Mandelli, F (Eur J Hematol, 1992)