[1] Kantonsspital St. Gallen,Division of Medical Oncology and Hematology
[2] University Clinics for Visceral Surgery and Medicine,Institute of Pathology
[3] University Hospital Berne,Department of Surgery
[4] Kantonsspital St. Gallen,Institute of Medical Biometry and Informatics
[5] Kantonsspital St. Gallen,undefined
[6] University of Heidelberg,undefined