1. Department of Radiology and Nuclear Medicine; Radboud University Medical Centre; Geert Grooteplein 10 6525 GA Nijmegen The Netherlands
2. Wallace H. Coulter Department of Biomedical Engineering; Georgia Institute of Technology and Emory University; 1701 Uppergate Drive Northeast Suite 5018 Atlanta GA 30322 USA
3. Department of Radiology; Brigham and Women's Hospital; 75 Francis St Boston MA 02115 USA
4. Department of Radiology and Imaging Sciences; Emory University; 1701 Uppergate Drive Northeast Suite 5018 Atlanta GA 30322 USA
5. Dutch Reference Centre for Screening (LRCB); Wijchenseweg 101 6538 SW Nijmegen The Netherlands