1 Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden. Electronic address: axel.wester@ki.se.
2 Transplantation and Liver Surgery, Helsinki University Hospital and Helsinki University, Helsinki, Finland.
3 Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden; Division of Hepatology, Department of Upper GI, Karolinska University Hospital, Stockholm, Sweden.
4 Department of Medicine, Huddinge, Karolinska Institutet, Stockholm, Sweden; Division of Hepatology, Department of Upper GI, Karolinska University Hospital, Stockholm, Sweden; Clinical Epidemiology Unit, Department of Medicine, Solna, Karolinska Institutet, Stockholm, Sweden.