1. Obesity Research Group, Institute of Biomedical and Clinical Science, University of Exeter Medical School, University of Exeter, Exeter, United Kingdom;
2. Biomedical Physics Group, Department of Physics, College of Engineering, Mathematics, and Physical Sciences, University of Exeter, Exeter, United Kingdom;
3. Department of Vascular Medicine, NIHR Exeter Clinical Research Facility and Institute of Biomedical and Clinical Science, University of Exeter Medical School, Exeter, United Kingdom
4. National Institute for Health Research (NIHR) Exeter Clinical Research Facility, Royal Devon and Exeter Hospital National Health Service (NHS) Foundation Trust, Exeter, United Kingdom;
5. Department of Obstetrics and Gynaecology, Royal Devon and Exeter Foundation NHS Trust, Exeter, United Kingdom;
6. Department of Bariatric Surgery, Musgrove Park Hospital, Taunton, United Kingdom; and