RT Journal Article SR Electronic T1 Benzodiazepine drug use and adverse respiratory outcomes among older adults with COPD JF European Respiratory Journal JO Eur Respir J FD European Respiratory Society SP 565 OP 566 DO 10.1183/09031936.00160514 VO 45 IS 2 A1 Rahul Katyal YR 2015 UL http://erj.ersjournals.com/content/45/2/565.abstract AB