PT - JOURNAL ARTICLE AU - Hull, F. M. TI - Disease coding. DP - 1971 Oct 01 TA - The Journal of the Royal College of General Practitioners PG - 581--585 VI - 21 IP - 111 4099 - http://bjgp.org/content/21/111/581.short 4100 - http://bjgp.org/content/21/111/581.full SO - J R Coll Gen Pract1971 Oct 01; 21