Department of Family Medicine, Taiwan Adventist Hospital, Taipei, Taiwan; Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan. Jean Mayer US Department of Agriculture Human Nutrition Research Center on Aging, Tufts University, Boston, Massachusetts, United States of America. Channing Laboratory, Department of Epidemiology, Brigham and Women's Hospital, Boston, Massachusetts, United States of America. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan; Department of Geriatrics and Gerontology, National Taiwan University Hospital, Taipei, Taiwan. Center for Human Genomics, Wake Forest University School of Medicine, Winston-Salem, North Carolina, United States of America. Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, Bethesda, Maryland, United States of America. Core Genotyping Facility, SAIC-Frederick, Inc., NCI-Frederick, Frederick, Maryland, United States of America; Division of Cancer Epidemiology and Genetics, NCI, NIH, DHHS, Bethesda, Maryland, United States of America. Department of Epidemiology and Biostatistics and Center of Human Genetics, University of California San Francisco, San Francisco, California, United States of America. The Institute of Cancer Research, Sutton, United Kingdom. Centre for Cancer Epidemiology, Departments of Public Health and Primary Care and Oncology, University of Cambridge, Strangeways Laboratory, Cambridge, United Kingdom. Surgical Oncology (Uro-Oncology: S4), Departments of Oncology and Surgery, University of Cambridge, Addenbrooke's Hospital, Cambridge, United Kingdom. Department of Social Medicine, University of Bristol, Bristol, United Kingdom. Academic Urology Unit, University of Sheffield, Sheffield, United Kingdom. University of Nottingham Medical School, Queens Medical Centre, Nottingham, United Kingdom. Cancer Epidemiology Centre, Cancer Council Victoria, Melbourne, Australia. Department of Medicine, Vanderbilt University School of Medicine, Nashville, Tennessee, United States of America. Department of Pathobiology and Medical and Forensic Biotechnologies, University of Palermo, Palermo, Italy. Department of Epidemiology, Harvard School of Public Health, Boston, Massachusetts, United States of America. Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan; Research Center for Genes, Environment and Human Health, College of Public Health, National Taiwan University, Taipei, Taiwan; Department of Public Health, College of Public Health, National Taiwan University, Taipei, Taiwan.