RT Journal Article SR Electronic T1 Health Services in a Population of 250,000 JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 912 OP 913 VO 23 IS 137 A1 J. D. E. Knox YR 1973 UL http://bjgp.org/content/23/137/912.3.abstract AB