RT Journal Article SR Electronic T1 Red faces and yellow faces. JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 13 OP 17 VO 18 IS 86 Suppl 2 A1 Knox, J. D. YR 1969 UL http://bjgp.org/content/18/86_Suppl_2/13.abstract AB