[1] Asst Spedali Civili Brescia, Hematol, Brescia, Italy
[2] Asst Treviglio Caravaggio, Hematol & Transfus Unit, Bergamo, Italy
[3] O Niguarda Ca Granda, Hematol, Milan, Italy
[4] Osped Niguarda Ca Granda, Hematol, Milan, Italy
[5] Asst SS Paolo & Carlo, Med 3, Milan, Italy
[6] Univ Milan, Milan, Italy