1. Department of Diagnostic Sciences, University Ghent, 9000 Ghent, Belgium
2. Department of Morphology and Functional Imaging, University Hospital Leuven, 3000 Leuven, Belgium
3. Department of Nuclear Medicine, Katholieke University Leuven, AZ Groeninge, President Kennedylaan 4, 8500 Kortrijk, Belgium
4. Department of Nuclear Medicine, Steve Biko Academic Hospital and Nuclear Medicine Research Infrastructure (NuMeRi), University of Pretoria, Pretoria 0002, South Africa
5. Department of Pneumology, AZ Groeninge, 8500 Kortrijk, Belgium