Induction chemotherapy in pancreatic cancer: CA 19-9 may predict resectability and survival - Heger, Ulrike; Sun, Huihui; Hinz, Ulf; Klaiber, Ulla; Tanaka, Masayuki; Liu, Bing; Sachsenmaier, Milena; Springfeld, Christoph; Michalski, Christoph; Büchler, Markus W.; Hackert, Thilo (HPB, 2020)