RT Journal Article SR Electronic T1 INTRODUCTION JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 1 OP 1 VO 16 IS Suppl 2 A1 W. V. Howells YR 1968 UL http://bjgp.org/content/16/Suppl_2/1.1.abstract AB