1. Department of Surgery, School of Health and Medical Sciences, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
2. Gastrointestinal Surgery, Nottingham Digestive Diseases Centre, National Institute for Health Research Nottingham Biomedical Research Centre, Nottingham University Hospitals Trust and University of Nottingham, Queen’s Medical Centre, Nottingham, United Kingdom
3. MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, School of Life Sciences, University of Nottingham, Queen’s Medical Centre, Nottingham, United Kingdom