RT Journal Article SR Electronic T1 Low-level exposure to carbon monoxide JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 404 OP 404 DO 10.3399/bjgp12X653480 VO 62 IS 601 A1 Ishani Kar-Purkayastha A1 Sarah Finlay A1 Virginia Murray YR 2012 UL http://bjgp.org/content/62/601/404.2.abstract AB