About the Authors

Håvard Midgard

havardmi@medisin.uio.no

Affiliations Department of Infectious Diseases, Akershus University Hospital, Lørenskog, Norway, Institute of Clinical Medicine, University of Oslo, Oslo, Norway

Jørgen G. Bramness

Affiliation Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway

Svetlana Skurtveit

Affiliations Norwegian Centre for Addiction Research, University of Oslo, Oslo, Norway, Department of Pharmacoepidemiology, The Norwegian Institute of Public Health, Oslo, Norway

John W. Haukeland

Affiliation Department of Gastroenterology, Oslo University Hospital, Oslo, Norway

Olav Dalgard

Affiliations Department of Infectious Diseases, Akershus University Hospital, Lørenskog, Norway, Institute of Clinical Medicine, University of Oslo, Oslo, Norway

Competing Interests

HM has held sponsored lectures for Roche, Medivir, Gilead Sciences, MSD and AbbVie. OD has received research grants from Gilead Sciences and MSD, been a consultant for Medivir, AbbVie, MSD and Bristol Myers Squibb, and held sponsored lectures for Medivir, Bristol Myers Squibb, Abbvie and Gilead. JGB, SS and JWH have declared no competing interests. This does not alter our adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceptualization: HM OD JGB. Data curation: HM SS. Formal analysis: HM OD JGB SS JWH. Funding acquisition: HM OD. Investigation: HM SS OD. Methodology: HM OD JGB SS JWH. Project administration: HM OD. Resources: HM SS OD. Software: HM SS. Supervision: OD. Validation: HM OD. Visualization: HM OD. Writing – original draft: HM OD. Writing – review & editing: HM OD JGB SS JWH.