1. Division of Oncology, University of Washington, Seattle, WA, USA
2. Translational Science and Therapeutics Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
3. Alliance Statistics and Data Management Center, Mayo Clinic, Rochester, MN, USA
4. School of Life Sciences, Nantong University, Nantong, P.R. China
5. Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
6. Department of Gastrointestinal Oncology, Memorial Sloan Kettering Cancer Center, New York, NY, USA
7. Division of Gastroenterology, University of Washington, Seattle, WA, USA