PT - JOURNAL ARTICLE ED - , TI - The Principles and Practice of Medicine DP - 1973 Aug 01 TA - The Journal of the Royal College of General Practitioners PG - 590--590 VI - 23 IP - 133 4099 - http://bjgp.org/content/23/133/590.2.short 4100 - http://bjgp.org/content/23/133/590.2.full SO - J R Coll Gen Pract1973 Aug 01; 23