A rare biclonal Hairy Cell Leukemia disclosed by an integrated diagnostic approach: A case report. Issue 6 (18th December 2020) - Vittoria, Laura; Bozzi, Fabio; Capone, Iolanda; Carniti, Cristiana; Lorenzini, Daniele; Gobbo, Morena; Bolli, Niccolò; Aiello, Antonella