RT Journal Article SR Electronic T1 Diseases of the colon, rectum and anus. Tutorials in postgraduate medicine JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 241 OP 241 VO 20 IS 99 YR 1970 UL http://bjgp.org/content/20/99/241.1.abstract AB