1. Vrije Universiteit,Department of Nuclear Medicine,Brussel,Belgium
2. KU Leuven, University of Leuven,Nuclear Medicine and Molecular Imaging; Medical Imaging Research Center (MIRC),Department of Imaging and Pathology,Belgium
3. UC Davis,Department of Biomedical Engineering and Department of Radiology,California,USA
4. RWTH Aachen University,Germany
5. Polytechnic University of Valencia,Spain