1. Division of Preventive Oncology; National Center for Tumor Diseases; Heidelberg Germany
2. German Cancer Research Center and German Consortium for Translational Cancer Research; Heidelberg Germany
3. Public Health Sciences Division; Fred Hutchinson Cancer Research Center; Seattle Washington
4. Southwest Oncology Group Statistical Center; Seattle Washington
5. Department of Surgery, Division of Public Health Sciences and Siteman Cancer Center; Washington University School of Medicine; St. Louis Missouri
6. Knight Cancer Institute, Oregon Health and Science University; Portland Oregon
7. Radiation Oncology Center, Olathe Regional Oncology Center; Olathe Kansas
8. Division of Medical Oncology, Keck School of Medicine, University of Southern California; Los Angeles California