RT Journal Article SR Electronic T1 SIR JOHN PARKINSON JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 578 OP 578 VO 26 IS 169 A1 William A. R. Thomson YR 1976 UL http://bjgp.org/content/26/169/578.1.abstract AB