Department of Hygiene and Epidemiology, University of Ioannina School of Medicine, Ioannina, Greece. Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom. Section of Nutrition and Metabolism, International Agency for Research on Cancer, Lyon, France. Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom. Medical Research Council Integrative Epidemiology Unit, Department of Population Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom. University Hospitals Bristol National Health Service Foundation Trust National Institute for Health Research Bristol Biomedical Research Centre, University of Bristol, Bristol, United Kingdom. Medical Research Council Biostatistics Unit, School of Clinical Medicine, University of Cambridge, Cambridge, United Kingdom. Department of Preventive Medicine and Community Health, The University of Texas Medical Branch, Galveston, TX, USA. Nuffield Department of Population Health, University of Oxford, Oxford, United Kingdom. Division of Human Nutrition and Health, Wageningen University & Research, Wageningen, Netherlands. Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, MD, USA. Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany. Medical Genetics Service, University Hospital Center (CHU) Nantes, Nantes, France. , Leeds Institute of Cancer and Pathology, University of Leeds, Leeds, United Kingdom. Huntsman Cancer Institute, University of Utah, Salt Lake City, UT, USA. Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA. Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany. German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany. Institute for Health Research, Kaiser Permanente Colorado, Denver, CO, USA. Behavioral and Epidemiology Research Group, American Cancer Society, Atlanta, GA, USA. Center for Public Health Genomics, University of Virginia, Charlottesville, VA, USA. Gastroenterology Department, Hospital Clinic, August Pi i Sunyer Biomedical Research Institute (IDIBAPS), Biomedical Research Network Center for Liver and Digestive Diseases (CIBEREHD), University of Barcelona, Barcelona, Spain. Division of Gastroenterology, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. Channing Division of Network Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA. Clinical and Translational Epidemiology Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA. Broad Institute of Harvard and MIT, Cambridge, MA, USA. Department of Epidemiology, Harvard TH Chan School of Public Health, Harvard University, Boston, MA, USA. Department of Immunology and Infectious Diseases, Harvard TH Chan School of Public Health, Harvard University, Boston, MA, USA. Division of Cancer Epidemiology, German Cancer Research Center (DKFZ), Heidelberg, Germany. University Medical Centre Hamburg-Eppendorf, University Cancer Centre Hamburg, Hamburg, Germany. Department of Cancer Biology and Genetics, The Ohio State University, Columbus, OH, USA. Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA. Department of Medicine, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA. Lunenfeld Tanenbaum Research Institute, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada. Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, Victoria, Australia. Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Melbourne, Victoria, Australia. Precision Medicine, School of Clinical Sciences at Monash Health, Monash University, Clayton, Victoria, Australia. SWOG Statistical Center, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. Institute of Cancer Research, Department of Medicine I, Medical University Vienna, Vienna, Austria. Department of Medicine I, University Hospital Dresden, Dresden University of Technology (TU Dresden), Dresden, Germany. Division of Human Genetics, Department of Internal Medicine, The Ohio State University, Columbus, OH, USA. Center for Gastrointestinal Biology and Disease, University of North Carolina, Chapel Hill, NC, USA. Department of Preventive Medicine, Chonnam National University Medical School, Gwangju, Republic of Korea. Jeonnam Regional Cancer Center, Chonnam National University Hwasun Hospital, Hwasun, Republic of Korea. Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden. University of Hawaii Cancer Center, Honolulu, HI, USA. Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA. Department of Family Medicine, University of Virginia, Charlottesville, VA, USA. Department of Clinical Genetics, Karolinska University Hospital, Stockholm, Sweden. Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden. CIBER of Epidemiology and Public Health (CIBERESP), Madrid, Spain. Biomedicine Institute (IBIOMED), University of León, León, Spain. Oncology Data Analytics Program, Catalan Institute of Oncology-Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain. Department of Clinical Sciences, Faculty of Medicine, University of Barcelona, Barcelona, Spain. ONCOBEL Program, Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain. Department of Epidemiology, Richard M Fairbanks School of Public Health, Indiana University, Indianapolis, IN, USA. IU Melvin and Bren Simon Cancer Center, Indiana University, Indianapolis, IN, USA. Department of Pathology, School of Medicine, Umm Al-Qura'a University, Mecca, Saudi Arabia. School of Public Health, University of Washington, Seattle, WA, USA. Clinical Genetics Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA. Department of Medicine, Weill Cornell Medical College, New York, NY, USA. Department of Public Health and Primary Care, University of Cambridge, Cambridge, United Kingdom. Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA. Centre for Public Health Research, Massey University, Wellington, New Zealand. Department of Public Health Sciences, School of Medicine, University of California Davis, Davis, CA, USA. Department of Community Medicine and Epidemiology, Lady Davis Carmel Medical Center, Haifa, Israel. Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel. Clalit National Cancer Control Center, Haifa, Israel. Division of Research, Kaiser Permanente Northern California, Oakland, CA, USA. Department of General Surgery, University Hospital Rostock, Rostock, Germany. Department of Internal Medicine, University of Utah, Salt Lake City, UT, USA. Department of Epidemiology, University of Iowa College of Public Health, Iowa City, IA, USA. Division of Laboratory Genetics, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA. Department of Radiation Sciences, Oncology Unit, Umeå University, Umeå, Sweden. Department of Molecular Biology of Cancer, Institute of Experimental Medicine of the Czech Academy of Sciences, Prague, Czech Republic. Institute of Biology and Medical Genetics, First Faculty of Medicine, Charles University, Prague, Czech Republic. Faculty of Medicine and Biomedical Center in Pilsen, Charles University, Pilsen, Czech Republic. Department of Epidemiology, University of Washington, Seattle, WA, USA. Discipline of Genetics, Memorial University of Newfoundland, St. John's, Newfoundland, Canada. Division of Epidemiology, Department of Medicine, Vanderbilt-Ingram Cancer Center, Vanderbilt Epidemiology Center, Vanderbilt University School of Medicine, Nashville, TN, USA. Formerly, Department for Determinants of Chronic Diseases (DCD), National Institute for Public Health and the Environment (RIVM), Bilthoven, Netherlands. Faculty of Medicine, CESP, University of Paris-Sud, Faculty of Medicine UVSQ, INSERM, University of Paris-Saclay, Villejuif, France. Centre for Research in Epidemiology and Population Health (CESP), Gustave Roussy, Villejuif, France. Cancer Biology and Therapeutics Group, UCD Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Dublin, Ireland. Unit of Nutrition and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology- Bellvitge Biomedical Research Institute (IDIBELL), L'Hospitalet de Llobregat, Barcelona, Spain. Blanquerna Faculty of Health Sciences, Ramon Llull University, Barcelona, Spain. Cancer Risk Factors and Life-Style Epidemiology Unit, Institute for Cancer Research, Prevention and Clinical Network-ISPRO, Florence, Italy. Department of Nutrition, Harvard TH Chan School of Public Health, Harvard University, Boston, MA, USA. USC Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, USA.