RT Journal Article SR Electronic T1 EPIDEMIOLOGY IN COUNTRY PRACTICE JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 129 OP 129 VO 23 IS 127 A1 John Wilkie YR 1973 UL http://bjgp.org/content/23/127/129.1.abstract AB