RT Journal Article SR Electronic T1 Patient co-payment for general practice services: slippery slope or a survival imperative for the NHS? JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 276 OP 277 DO 10.3399/bjgp15X685105 VO 65 IS 635 A1 Les Toop A1 Claire Jackson YR 2015 UL http://bjgp.org/content/65/635/276.abstract AB