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