RT Journal Article SR Electronic T1 Patients, hospitals and operational research JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 281 OP 282 VO 24 IS 141 A1 J. G. R. Clarke YR 1974 UL http://bjgp.org/content/24/141/281.abstract AB