the Prince Charles Hospital;
School of Medicine;
University of Queensland;
Sydney Medical School;
University of Sydney;
Cancer Diagnosis and Pathology Group;
Kolling Institute of Medical Research;
Royal North Shore Hospital;
Department of Surgery;
Royal North Shore Hospital;
Queen Elizabeth Hospital;
University of Adelaide;
Flinders Medical Centre;
Royal Adelaide Hospital;
Princess Alexandra Hospital;
Department of Upper GI Surgery;
Bankstown Hospital;
Discipline of Surgery;
Western Sydney University;
Periampullary cancer; Pancreatobiliary subtype; Intestinal subtype; Ampullary cancer; Duodenal cancer; Epidermal growth factor receptor; Pancreatic cancer; Chemotherapy; Pancreaticoduodenectomy; KRAS;