RT Journal Article SR Electronic T1 Co-payments and a just health service JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 405 OP 406 DO 10.3399/bjgp12X653507 VO 62 IS 601 A1 Francesco Carelli YR 2012 UL http://bjgp.org/content/62/601/405.abstract AB