*Upper Gastrointestinal Surgery, Department of Molecular medicine and Surgery, Karolinska Institutet, Karolinska University Hospital, Stockholm, Sweden
†Centre for Clinical Research Sörmland, Uppsala University, Eskilstuna, Sweden
‡Department of Public Health and Nursing, NTNU, Norwegian University of Science and Technology, Trondheim/Levanger, Norway
§Medical Department, Levanger Hospital, Nord-Trøndelag Hospital Trust, Levanger, Norway
∥Clinic of Gastroenterology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
¶Nykøbing Falster Hospital, University of Copenhagen, Denmark
#Finnish Cancer Registry, Institute for Statistical and Epidemiological Cancer Research, Helsinki, Finland
**Faculty of Social Sciences, Tampere University, Tampere, Finland
††Icelandic Cancer Registry, Icelandic Cancer Society, Reykjavik, Iceland
‡‡Faculty of Medicine, University of Iceland, Reykjavik, Iceland
§§Department of Public Health, University of Copenhagen, Copenhagen, Denmark
∥∥School of Cancer and Pharmaceutical Sciences, King’s College London, United Kingdom
[email protected].
Author’s contribution: Study concept and design were done by all authors; acquisition of data was done by all authors; analysis and interpretation of data were done by M.Y., G.S., and J.L.; drafting of the manuscript was done by M.Y. and J.L.; critical revision of the manuscript for important intellectual content was done by all authors; statistical analysis was done by M.Y. and G.S.; funding was obtained by J.L.; study supervision was done by J.L.
Funding: This work was supported by the Nordic Cancer Union (grant number 186058), Swedish Cancer Society (grant number 180684), and Swedish Research Council (grant number 340–2013–5478). Jesper Lagergren was supported by the United European Gastroenterology Research Prize and the Distinguished Professor Award at Karolinska Institutet.
The authors report no conflicts of interest.
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