[1] Univ Insubria, Osped Circolo, Anat Pathol Unit, I-21100 Varese, Italy
[2] Univ Insubria, Osped Circolo, Oncol Unit, I-21100 Varese, Italy
[3] Ist Cantonale Patol, Locarno, Switzerland
[4] Oncol Inst So Switzerland IOSI, Lymphoma Unit, Bellinzona, Switzerland
[5] Oncol Inst So Switzerland IOSI, Expt Oncol Lab, Bellinzona, Switzerland
[6] Osped Riuniti Bergamo, I-24100 Bergamo, Italy
[7] European Inst Oncol, Div Pathol, Milan, Italy
[8] European Inst Oncol, Dept Haematoncol, Milan, Italy
[9] Osped Civile Feltre, Serv Anat Patol, Feltre, Italy