Role of Positron Emission Tomography (PET/CT) in Primary Mediastinal Large B Cell Lymphoma (PMLBCL): Preliminary Results of an International Phase II Trial (IELSG-26 Study) Conducted On Behalf of the International Extranodal Lymphoma Study Group (IELSG), the Fondazione Italiana Linfomi (FIL) and the UK NCRI Lymphoma Group | Publicación