Karolinska Institutet, Stockholm, Stockholm County Council, Sweden
Uppsala University Hospital, Uppsala, Sweden
Mora Hospital, Mora, Sweden
Linköping University Hospital, Linköping, Sweden
Regional Hospital Ryhov, Jönköping, Sweden
Ersta hospital, Stockholm, Sweden
CPTU, Stockholm, Sweden
Black Lion Hospital (BLH), Addis Ababa University, Faculty of Medicine, Addis Ababa, Lideta sub city, Ethiopia
Ersta Hospital, Stockholm, Sweden
Black Lion Hospital (BLH), Addis Ababa University, Faculty of Medicine, Addis Ababa, Lideta sub city, Ethiopia
Department of Surgical gastroenterology, Karolinska University Hospital, Stockholm, Sweden
Department of Upper Abdominal Surgery, Linköping University Hospital, Linköping, Sweden
Karolinska Institutet, Stockholm,, Stockholm, Sweden
Danderyd University Hospital Corp, Stockholm, Sweden