Challenges of undertaking a clinical trial using bubble-PEP in an acute exacerbation of chronic obstructive pulmonary disease: A feasibility study
2016 ◽
Vol 44
(1)
◽
pp. 8-16
◽
2016 ◽
Vol 146
(7)
◽
pp. 301-304
2015 ◽
Vol 4
(4)
◽
pp. 310
2019 ◽
Vol 20
(3)
◽
pp. 139-141