RT Journal Article SR Electronic T1 "Disease prevention and health promotion". JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 393 OP 409 VO 21 IS 108 A1 F. M. Shattock YR 1971 UL http://bjgp.org/content/21/108/393.abstract AB