PT - JOURNAL ARTICLE AU - R Jones TI - Crohn's disease. DP - 1989 Mar 01 TA - The Journal of the Royal College of General Practitioners PG - 122--124 VI - 39 IP - 320 4099 - http://bjgp.org/content/39/320/122.2.short 4100 - http://bjgp.org/content/39/320/122.2.full SO - J R Coll Gen Pract1989 Mar 01; 39