PT - JOURNAL ARTICLE AU - D. J. Pereira Gray TI - THE SI FOR THE HEALTH PROFESSIONS DP - 1978 Oct 01 TA - The Journal of the Royal College of General Practitioners PG - 633--633 VI - 28 IP - 195 4099 - http://bjgp.org/content/28/195/633.3.short 4100 - http://bjgp.org/content/28/195/633.3.full SO - J R Coll Gen Pract1978 Oct 01; 28