RT Journal Article SR Electronic T1 Systemic treatment of advanced pancreatic cancer—step by step progress JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 660 OP 661 DO 10.1136/gutjnl-2012-303129 VO 62 IS 5 A1 Thomas Seufferlein YR 2013 UL http://gut.bmj.com/content/62/5/660.abstract AB