RT Journal Article SR Electronic T1 THE NEW CASE FOR EXERCISE JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 379 OP 379 VO 38 IS 313 A1 McCracken, Jim YR 1988 UL http://bjgp.org/content/38/313/379.2.abstract AB