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Review: methylxanthines are not effective for acute exacerbations of chronic obstructive pulmonary disease

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Footnotes

  • * Information provided by author.

  • For correspondence: Dr R G Barr, Columbia-Presbyterian Medical Center, New York, NY, USA. rgb9columbia.edu

  • Sources of funding: National Institutes of Health; Robert Wood Johnson Generalist Physician Faculty Scholar Award; Canadian Institute of Health Research.