RT Journal Article SR Electronic T1 Long-term benzodiazepine and Z-drugs: are we committing the denominator fallacy? JF British Journal of General Practice JO Br J Gen Pract FD British Journal of General Practice SP 448 OP 448 DO 10.3399/bjgp17X692777 VO 67 IS 663 A1 Patrick J McNally YR 2017 UL http://bjgp.org/content/67/663/448.2.abstract AB