RT Journal Article SR Electronic T1 Addition of intensive follow-up procedures to standard follow-up did not improve survival in patients with colorectal cancer JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 140 OP 140 DO 10.1136/ebm.1998.3.140 VO 3 IS 5 YR 1998 UL http://ebm.bmj.com/content/3/5/140.abstract AB