TY - JOUR T1 - NEGATIVE EVIDENCE IN MEDICAL PRACTICE JF - The Journal of the Royal College of General Practitioners JO - J R Coll Gen Pract SP - 753 LP - 754 VL - 29 IS - 209 AU - James Brennig Y1 - 1979/12/01 UR - http://bjgp.org/content/29/209/753.4.abstract N2 - 300 Multiple ChoicesThis is a pdf-only article and there is no markup to show you.full-text.pdf ER -