RT Journal Article SR Electronic T1 The opinions of Sir James Mackenzie JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 799 OP 802 VO 22 IS 124 A1 J. P. Horder YR 1972 UL http://bjgp.org/content/22/124/799.abstract AB