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Validity of the Common Cold Questionnaire (CCQ) in Asthma Exacerbations
- Heather Powell,
- Joanne Smart,
- Lisa G. Wood,
- Terry Grissell,
- Darren R. Shafren,
- Michael J. Hensley,
- Peter G. Gibson
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- Published: March 19, 2008
- https://doi.org/10.1371/journal.pone.0001802