Controlled Clinical Study of a Long-Term Treatment of Chronic Obstructive Lung Disease Using a Combination of Fenoterol and Ipratropium Bromide in Aerosol Form
1985 ◽
Vol 20
(3)
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pp. 205-210
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2013 ◽
Vol 123
(12)
◽
pp. 5410-5410
◽
1981 ◽
Vol 9
(11)
◽
pp. 796-800
◽