UCBL, Centre Hospitalier Lyon-Sud, University Lyon, Carmen, Cens, F-69622, Lyon, France. denis.fouque@chu-lyon.fr. Department Nephrology, Centre Hospitalier Lyon Sud, Chemin du grand revoyet, 69495, Pierre Bénite, France. denis.fouque@chu-lyon.fr. Division of Nephrology, Huashan Hospital, Fudan University, Shanghai, China. Department of Parenteral and Enteral Nutrition, Peking Union Medical College Hospital, Beijing, China. Department Nephrology and Internal Medicine, Dr Carol Davila Hospital of Nephrology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania. Division Nephrology, Kaohsiung Medical University Hospital, Graduate Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan. Division Nephrology and Hypertension, University of California Irvine School of Medicine, Irvine, CA, USA. Deparment Epidemiology, UCLA Fielding School of Public Health, Los Angeles, CA, USA. Division Nephrology and Hypertension, Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA. David Geffen School of Medicine at UCLA, UCLA Fielding School of Public Health, Los Angeles, CA, USA. Nephrology Division, Baylor College of Medicine, Houston, TX, USA. SS Nephrology, ASOU San Luigi, Departmentt of Clinical and Biological Sciences, University of Torino, Turin, Italy. Department Nephrol, Institute Clin Exp Med, Transpl Centre, Prague, Czech Republic. Service de Néphrologie, CHU de Bordeaux & Aurad-Aquitaine, Bordeaux, France.