Article Text
Therapeutics
Tiotropium improved lung function more than ipratropium in chronic obstructive pulmonary disease
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Footnotes
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Source of funding: Boehringer Ingelheim BV.
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For correspondence: Dr J A van Noord, Department of Respiratory Diseases, Atrium Medisch Centrum, Henri Dunantstraat 5, 6419 PC Heerlen, the Netherlands. Fax +31 455767534.
↵† Information provided by the author.