RT Journal Article SR Electronic T1 BOOK REVIEWS JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 717 OP 717 VO 22 IS 123 A1 Robert H. M. Lefever YR 1972 UL http://bjgp.org/content/22/123/717.2.abstract AB