About the Authors

Katy A. Chalmers

Roles Data curation, Formal analysis, Investigation, Methodology, Project administration, Validation, Visualization, Writing – original draft, Writing – review & editing

katy.chalmers@bristol.ac.uk

Affiliations National Institute for Health and Care Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust and University of Bristol, Bristol, United Kingdom, Bristol Centre for Surgical Research, University of Bristol, Bristol, United Kingdom

Karen Coulman

Roles Conceptualization, Data curation, Methodology, Supervision, Validation, Writing – original draft

Affiliations National Institute for Health and Care Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust and University of Bristol, Bristol, United Kingdom, Bristol Centre for Surgical Research, University of Bristol, Bristol, United Kingdom, Obesity and Bariatric Surgery Service, North Bristol NHS Trust, Bristol, United Kingdom

Jane M. Blazeby

Roles Conceptualization, Funding acquisition, Methodology, Supervision, Writing – original draft, Writing – review & editing

Affiliations National Institute for Health and Care Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust and University of Bristol, Bristol, United Kingdom, Bristol Centre for Surgical Research, University of Bristol, Bristol, United Kingdom

John Dixon

Roles Investigation, Validation, Writing – review & editing

Affiliation Iverson Health Innovation Research Institute, Swinburne University of Technology, Melbourne, Australia

Lilian Kow

Roles Investigation, Project administration, Validation, Writing – review & editing

Affiliation College of Medicine and Public Health, Flinders University, Adelaide, Australia

Ronald Liem

Roles Conceptualization, Investigation, Methodology, Validation, Writing – original draft, Writing – review & editing

Affiliation Department of Surgery, Groene Hart Hospital, Gouda, The Netherlands

Dimitri J. Pournaras

Roles Data curation, Investigation, Methodology, Project administration, Validation, Writing – original draft, Writing – review & editing

Affiliation Obesity and Bariatric Surgery Service, North Bristol NHS Trust, Bristol, United Kingdom

Johan Ottosson

Roles Investigation, Methodology, Writing – review & editing

Affiliation School of Medical Sciences, Örebro University, Örebro, Sweden

Richard Welbourn

Roles Investigation, Methodology, Writing – original draft, Writing – review & editing

Affiliation Department of Upper GI and Bariatric Surgery, Somerset NHS Foundation Trust, Taunton, United Kingdom

Wendy Brown

Roles Conceptualization, Investigation, Writing – review & editing

Affiliation Department of Surgery, Monash University, Melbourne, Australia

Kerry N. L. Avery

Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

‡ This author are senior author on this work.

Affiliations National Institute for Health and Care Research Bristol Biomedical Research Centre, University Hospitals Bristol and Weston NHS Foundation Trust and University of Bristol, Bristol, United Kingdom, Bristol Centre for Surgical Research, University of Bristol, Bristol, United Kingdom

Competing Interests

I have read the journal’s policy and the authors of the manuscript have the following competing interests: DJP has been funded by the Royal College of Surgeons of England. He receives consulting fees from Johnson and Johnson, and payments for lectures, presentations, and educational events from Johnson and Johnson, Medtronic, and Novo Nordisk. JO receives consulting fees for participating in advisory boards for Johnson & Johnson and Vifor Pharma. WB received lecture, presentations, speakers’ bureaus, manuscript writing, or educational events fees for Merck Sharpe and Dohme, Novo Nordisk, and Gore; research grants from Medtronic, Johnson & Johnson, Gore, Applied Medical, Novo Nordisk, and Commonwealth Government of Australia; conference travel fees from Novo Nordisk.