PT - JOURNAL ARTICLE AU - Knox, J. D. TI - Red faces and yellow faces. DP - 1969 Sep 01 TA - The Journal of the Royal College of General Practitioners PG - 13--17 VI - 18 IP - 86 Suppl 2 4099 - http://bjgp.org/content/18/86_Suppl_2/13.short 4100 - http://bjgp.org/content/18/86_Suppl_2/13.full SO - J R Coll Gen Pract1969 Sep 01; 18