PT - JOURNAL ARTICLE ED - British Journal of General Practice TI - Systematic surveillance DP - 1980 Jan 01 TA - The Journal of the Royal College of General Practitioners PG - 2--2 VI - 30 IP - 210 4099 - http://bjgp.org/content/30/210/2.2.short 4100 - http://bjgp.org/content/30/210/2.2.full SO - J R Coll Gen Pract1980 Jan 01; 30