Occult hepatitis B virus infection of peripheral blood mononuclear cells among treatment-naive patients with chronic lymphocytic leukemia. - Rossi, Davide; Sala, Lisa; Minisini, Rosalba; Fabris, Carlo; Falleti, Edmondo; Cerri, Michaela; Burlone, Michela Emma; Toniutto, Pierluigi; Gaidano, Gianluca; Pirisi, Mario (Leukemia & Lymphoma, 2009)