[1
]
Division of Digestive Surgery and Urology, Departments of Acute and Digestive Surgery,
Turku University Hospital, Turku, Finland2Department of Surgery, Turku University,
Turku, Finland.
[2
]
Department of Surgery, Mikkeli Central Hospital, Mikkeli, Finland4Institute of Clinical
Medicine, University of Eastern Finland, Joensuu, Finland.
[3
]
Department of Surgery, Oulu University Hospital, Oulu, Finland.
[4
]
Division of Surgery, Gastroenterology and Oncology, Tampere University Hospital, Tampere,
Finland.
[5
]
Department of Surgery, Jyväskylä Central Hospital, Jyväskylä, Finland.
[6
]
Institute of Clinical Medicine, University of Eastern Finland, Joensuu, Finland8Department
of Surgery, Kuopio University Hospital, Kuopio, Finland9Department of Surgery, Seinäjoki
Central Hospital, Seinäjoki, Finland.
[7
]
Department of Public Health, University of Turku, Turku, Finland11Primary Health Care
Unit, Hospital District of Southwest Finland, Turku, Finland.
[8
]
Department of Biostatistics, University of Turku, Turku, Finland.
[9
]
Department of Radiology, Turku University Hospital, Turku, Finland.
[10
]
Institute of Clinical Medicine, University of Eastern Finland, Joensuu, Finland7Department
of Surgery, Jyväskylä Central Hospital, Jyväskylä, Finland.
[11
]
Department of Radiology, Oulu University Hospital, Oulu, Finland.
[12
]
Department of Radiology, Tampere University Hospital, Tampere, Finland.