1. Central Hospital S, Maurizio; Department of Haematology and Bone Marrow Transplantation; Bolzano Italy 39100
2. Spedali Civili di Brescia; Haematology Department; Brescia Italy 25100
3. Mario Negri Institute for Pharmacological Research; Italian Cochrane Centre; Via La Masa, 19 Milan Italy 20156
4. Mario Negri; Centro Cochrane Italiano; via Giuseppe La Masa 19 MILANO Italy 20156