Generation R Study Group, Erasmus MC, University Medical Center, Rotterdam, the Netherlands. Department of Pediatrics, Erasmus MC, University Medical Center, Rotterdam, the Netherlands. MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, England. NIHR Southampton Biomedical Research Centre, University of Southampton and University Hospital Southampton NHS Foundation Trust, Southampton, England. Public Health Division of Gipuzkoa, San Sebastián, Spain. BioDonostia Research Institute, San Sebastián, Spain. CIBER Epidemiología y Salud Pública, Madrid, Spain. EPI Unit-Instituto de Saúde Pública, Universidade do Porto, Porto, Portugal. Department of Public Health and Forensic Sciences and Medical Education, Unit of Clinical Epidemiology, Predictive Medicine and Public Health, University of Porto Medical School, Porto, Portugal. INSERM, UMR1153 Epidemiology and Biostatistics Sorbonne Paris Cité Center, ORCHAD Team, Villejuif, France. Paris Descartes University, Villejuif, France. Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles. Department of Social Medicine, Faculty of Medicine, University of Crete, Heraklion, Greece. Department of Genetics and Cell Biology, Maastricht University, Maastricht, the Netherlands. First Department of Pediatrics, National and Kapodistrian University of Athens, Medical School, Aghia Sophia Children's Hospital, Athens, Greece. University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, the Netherlands. Centre de Recherche du Centre Hospitalier de l'Universite de Sherbrooke, Sherbrooke, Quebec, Canada. Department of Exposure and Environmental Epidemiology, Norwegian Institute of Public Health, Oslo, Norway. Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy. Department of Epidemiology, Lazio Regional Health Service, Rome, Italy. Department of Environmental Epidemiology, Nofer Institute of Occupational Medicine, Lodz, Poland. Department of Public Health Sciences, School of Medicine, University of California, Davis. Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, Massachusetts. Diabetes Unit, Massachusetts General Hospital, Boston. Center for Global Health, College of Medicine, University of Illinois, Chicago. Department of Statistics and Computational Research, Universitat de València, València, Spain. Department of Health Security, National Institute for Health and Welfare, Kuopio, Finland. Division of Human Nutrition and Health, Wageningen University and Research, Wageningen, the Netherlands. MRC Integrative Epidemiology Unit, University of Bristol, Bristol, England. Population Health Science, Bristol Medical School, University of Bristol, Bristol, England. Department of Public Health, University of Turku, Turku, Finland. Department of Environmental Immunology/Core Facility Studies, Helmholtz Centre for Environmental Research-UFZ, Leipzig, Germany. Division of Health Data and Digitalization, Norwegian Institute of Public Health, Oslo, Norway. Department of Epidemiology, Jagiellonian University Medical College, Krakow, Poland. Turku Centre for Biotechnology, University of Turku and Abo Akademi University, Turku, Finland. Department of Nutrition and Dietetics, School of Health Science and Education, Harokopio University, Athens, Greece. Department of Epidemiology, Care and Public Health Research Institute, Maastricht University, Maastricht, the Netherlands. National Institute of Public Health, University of Southern Denmark, Copenhagen. Department of Public Health, Section of Epidemiology, University of Copenhagen, Copenhagen, Denmark. Department of Dietetics, Nutrition, and Sport, La Trobe University, Melbourne, Australia. Research Unit for Gynaecology and Obstetrics, Institute for Clinical Research, University of Southern Denmark, Odense. Department of Environmental Exposures and Epidemiology, Domain of Infection Control and Environmental Health, Norwegian Institute of Public Health, Oslo, Norway. Department of Public Health, University of Helsinki, Helsinki, Finland. Department of Medical Sciences, University of Turin, Turin, Italy. Department for Health Evidence, Radboud Institute for Health Sciences, Radboud University Medical Center, Nijmegen, the Netherlands. Institute for Maternal and Child Health-IRCCS Burlo Garofolo, Trieste, Italy. Institute of Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany. Department of Noncommunicable Diseases, Norwegian Institute of Public Health, Oslo, Norway. Norwegian Institute of Public Health, Oslo, Norway. Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway. Dr von Hauner Children's Hospital, Ludwig-Maximilians-University Munich, Munich, Germany. Ib-Salut, Area de Salut de Menorca, Palma, Spain. Department of Environmental Medicine, Slovak Medical University, Bratislava, Slovakia. Radboud Reshape Innovation Center, Radboud University Medical Center, Nijmegen, the Netherlands. Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands. Research Institute, Department of Pediatrics, Marien-Hospital Wesel, Wesel, Germany. ISGlobal, Institute for Global Health, Barcelona, Spain. Universitat Pompeu Fabra, Barcelona, Spain. National Institute for Public Health and the Environment, Bilthoven, the Netherlands. Department of Medical and Social Problems of Family Health, Institute of Pediatrics, Obstetrics and Gynecology, Kyiv, Ukraine. Novo Nordisk Foundation Center for Basic Metabolic Research, Section of Metabolic Genetics, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark. Department of Epidemiology, Erasmus MC, University Medical Center, Rotterdam, the Netherlands.