Extrapancreatic malignancies in patients with pancreatic cancer: epidemiology and clinical consequences - Hackert, Thilo; Tjaden, Christin; Müller, Sascha A.; Hinz, Ulf; Hartwig, Werner; Strobel, Oliver; Fritz, Stefan; Schmied, Bruno; Büchler, Markus W.; Werner, Jens (Pancreas, 2012)