Institute for Nutritional Medicine, School of Medicine, Technical University of Munich, 80992 Munich, Germany. Clinic of Internal Medicine II, University Hospital of Regensburg, 93053 Regensburg, Germany. Hannover Unified Biobank, Hannover Medical School, 30625 Hannover, Germany. Institute of Epidemiology, Helmholtz Zentrum München, German Research Center for Environmental Health, 85764 Neuherberg, Germany. Boden Collaboration, Charles Perkins Centre, University of Sydney, Sydney, NSW 2006, Australia. Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford OX2 6GG, UK. ZIEL Institute for Food and Health, Else Kröner-Fresenius-Center of Nutritional Medicine, School of Life Sciences, Technical University of Munich, 85354 Freising-Weihenstephan, Germany.