RT Journal Article SR Electronic T1 SIGMOIDOSCOPY IN GENERAL PRACTICE JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 378 OP 378 VO 27 IS 179 A1 Hooper, P. D. YR 1977 UL http://bjgp.org/content/27/179/378.2.abstract AB