RT Journal Article SR Electronic T1 Too many options, too little choice in COPD? JF Drug and Therapeutics Bulletin JO Drug Ther Bull FD BMJ Publishing Group Ltd SP 13 OP 13 DO 10.1136/dtb.2016.2.0379 VO 54 IS 2 YR 2016 UL http://dtb.bmj.com/content/54/2/13.abstract AB