PT - JOURNAL ARTICLE ED - British Journal of General Practice TI - How to interpret DP - 1965 Sep 01 TA - The Journal of the College of General Practitioners PG - 200--201 VI - 10 IP - 2 4099 - http://bjgp.org/content/10/2/200.2.short 4100 - http://bjgp.org/content/10/2/200.2.full SO - J Coll Gen Pract1965 Sep 01; 10