1. From the Department of Clinical Physiology and Nuclear Medicine, Positron Emission Tomography (PET) and Cyclotron Unit, and the Departments of Haematology, Radiotherapy, and Oncology, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark; the Department of Haematology, University Hospital Herlev, Copenhagen, Denmark; and the PET Center and the Department of Haematology, Aarhus University Hospital, Aarhus, Denmark.