1. Department of Internal Medicine; Erasmus University Medical Center; Rotterdam The Netherlands
2. The Generation R Study Group; Erasmus University Medical Center; Rotterdam The Netherlands
3. Department of Epidemiology; Erasmus University Medical Center; Rotterdam The Netherlands
4. Department of Pediatrics; Medicine; Erasmus University Medical Center; Rotterdam The Netherlands
5. Beck Radiological Innovations Inc.; Baltimore; MD USA
6. Department of Radiology; Johns Hopkins University School of Medicine; Baltimore Maryland USA