About the Authors

Heidi Storgaard

Hstorgaard@dadlnet.dk

Affiliation Centre for Diabetes Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark

Lise L. Gluud

Affiliation Gastrounit, Copenhagen University, Hvidovre Hospital, Hvidovre, Denmark

Cathy Bennett

Affiliation Centre for Technology Enabled Health Research, Coventry University, Coventry, United Kingdom

Magnus F. Grøndahl

Affiliation Centre for Diabetes Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark

Mikkel B. Christensen

Affiliations Centre for Diabetes Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark, Department of Clinical Pharmacology, Bispebjerg Hospital, University of Copenhagen, Copenhagen, Denmark

Filip K. Knop

Affiliations Centre for Diabetes Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark, Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark, The Novo Nordisk Foundation Centre for Basic Metabolic Research, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

Tina Vilsbøll

Affiliations Centre for Diabetes Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark, Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark

Competing Interests

HS has received lecture fees from Advisory Boards of AstraZeneca, Boehringer Ingelheim Pharmaceuticals, and Bristol-Myers Squibb and has participated in Advisory Boards of AstraZeneca and Boehringer Ingelheim Pharmaceuticals. FKK has received lecture fees from, participated in Advisory Boards of and/or consulted for AstraZeneca, Boehringer Ingelheim Pharmaceuticals, Bristol-Myers Squibb, Eli Lilly and Company, Gilead Sciences, Merck Sharp & Dohme, Novartis, Novo Nordisk, Ono Pharmaceuticals, Sanofi and Zealand Pharma. TV has received lecture fees from, participated in Advisory Boards of and/or consulted for Amgen, AstraZeneca, Boehringer Ingelheim Pharmaceuticals, Bristol-Myers Squibb, Eli Lilly and Company, Merck Sharp & Dohme, Novo Nordisk and Sanofi. CB is the proprietor of Systematic Research Ltd, a company providing research services, and is an employee of that company, and thus she received consultancy fees for participation in the project. LLG, MG, MC and CB declare no relationships with any organisations that might have an interest in the submitted work within the last three years, or no other relationships or activities that could have influenced the submitted work. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptualization: HS LLG TV. Data curation: HS. Formal analysis: CB HS LLG. Investigation: HS MFG MBC. Methodology: HS LLG TV. Project administration: HS. Resources: HS TV FKK. Software: HS LLG CB. Supervision: LLG. Validation: HS LLG CB. Visualization: HS CB. Writing – original draft: CB. Writing – review & editing: CB HS LLG TV FKK MBC MFG.