First Maintenance Therapy for Chronic Obstructive Pulmonary Disease: Retrospective Analyses of US and UK Healthcare Databases
2018 ◽
Vol 32
(2)
◽
pp. 81-93
2008 ◽
Vol 6
(3)
◽
pp. 138-146
◽
2007 ◽
Vol 29
(10)
◽
pp. 2121-2133
◽
2018 ◽
Vol 3
(4)
◽
pp. 203-209