Inverse probability of treatment weighting analysis of upfront surgery versus neoadjuvant chemoradiotherapy followed by surgery for pancreatic adenocarcinoma with arterial abutment. (September 2018) - Fujii, T.; Yamada, S.; Murotani, K.; Takami, H.; Tanaka, N.; Yoshioka, I.; Shibuya, K.; Okumura, T.; Kodera, Y.