1 Clinical Nutrition and Chairman of the Scientific Committee of the European Society for Clinical Nutrition and Metabolism (ESPEN), Luxembourg; Gastrointestinal Surgery, Nottingham Digestive Diseases Centre, National Institute for Health Research (NIHR) Nottingham Biomedical Research Centre, Nottingham University Hospitals NHS Trust and University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK; MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen's Medical Centre, Nottingham, NG7 2UH, UK. Electronic address: dileep.lobo@nottingham.ac.uk.
2 Clinical Nutrition, Netherlands; Center for Translational Research in Aging & Longevity, Department of Health & Kinesiology, Texas A&M University, Room #125, 675 John Kimbrough Blvd, TAMU Mail Stop 4253, College Station, TX, 77843-4253, USA. Electronic address: nep.deutz@ctral.org.