RT Journal Article SR Electronic T1 Equipment for the Disabled JF The Journal of the Royal College of General Practitioners JO J R Coll Gen Pract FD British Journal of General Practice SP 678 OP 678 VO 26 IS 170 A1 D. J. Pereira Gray YR 1976 UL http://bjgp.org/content/26/170/678.1.abstract AB