Predictors of occult metastases in potentially Resectable pancreatic ductal adenocarcinoma oleh Takeshi Murakami, MD, Yasutoshi Kimura, MD, PhD, Masafumi Imamura, MD, PhD, Minoru Nagayama, MD, PhD, Toru Kato, MD, Kazuharu Kukita, MD, PhD, Makoto Yoshida, MD, PhD, Yoshiharu Masaki, MD, PhD, Hiroshi Nakase, MD, PhD, Ichiro Takemasa, MD, PhD