1. Division of Cancer Epidemiology, German Cancer Research Center, Heidelberg, Germany
2. Translational Lung Research Center Heidelberg, German Center for Lung Research, Heidelberg, Germany
3. Division of Radiology, German Cancer Research Center, Heidelberg, Germany
4. Department of Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
5. Department of Diagnostic and Interventional Radiology with Nuclear Medicine, Thoraxklinik-Heidelberg GmbH, Heidelberg, Germany