1. Synarc Inc.; Hamburg Germany
2. Institute of Medical Physics; University of Erlangen; Erlangen Germany
3. Synarc Inc.; Newark CA USA
4. Department of Radiology, and Radiological Sciences; Uniformed Services University of Health Sciences (USUHS); Bethesda MD USA
5. Department of Epidemiology & Biostatistics; University of California; San Francisco CA USA
6. Merck & Co., Inc.; Whitehouse Station NJ USA
7. Department of Radiology; University of California; San Francisco CA USA