RT Journal Article SR Electronic T1 EPIDEMIOLOGY FOR THE UNINITIATED JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 755 OP 756 VO 29 IS 209 A1 R. H. Westcott YR 1979 UL http://bjgp.org/content/29/209/755.4.abstract AB