00495nas a2200169   4500000000100000000000100001008004100002100001400043700001300057700001000070700001300080700001500093245018600108300001000294490000700304022001400311       2017                            d1 aS. Landis1 aK. Wurst1 aH. Le1 aK. Bonar1 aY. Punekar00aCan Assessment of Disease Burden Prior to Changes in Initial COPD Maintenance Treatment Provide Insight into Remaining Unmet Needs? A Retrospective Database Study in UK Primary Care  a80-850 v14  a1541-2563