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1 Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark. Electronic address: pj@clin.au.dk.
2 Department of Clinical Sciences and Community Health, University of Milan, 20133 Milan, Italy.
1 Department of Hepatology and Gastroenterology, Aarhus University Hospital, Aarhus, Denmark; Department of Clinical Epidemiology, Aarhus University Hospital, Aarhus, Denmark. Electronic address: pj@clin.au.dk.
2 Department of Clinical Sciences and Community Health, University of Milan, 20133 Milan, Italy.