1. 1Sheikh Ahmed Center for Pancreatic Cancer Research, The University of Texas MD Anderson Cancer Center, Houston, Texas.
2. 2Department of Translational Molecular Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
3. 3Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
4. 4Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
5. 5Department of Surgical Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
6. 6Bioinformatics and Systems Biology Graduate Program and Moores Cancer Center, University of California San Diego School of Medicine, San Diego, California.
7. 7Department of Surgery, Indiana University School of Medicine, Indianapolis, Indiana.
8. 8Department of Pathology and Laboratory Medicine, Indiana University School of Medicine, Indianapolis, Indiana.
9. 9Department of Surgery, University of Utah, Salt Lake City, Utah.
10. 10Department of Pathology, University of Utah, Salt Lake City, Utah.
11. 11Department of Surgery, Division of Surgical Oncology, University of California San Diego, San Diego, California.
12. 12Department of Pathology, The University of Texas MD Anderson Cancer Center, Houston, Texas.