Article Information
vol. 42 no. Suppl 57
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History
- Published online July 25, 2014.
Copyright & Usage
© 2013 ERS
Author Information
- 1Chest Department, Assiut University Hospital, Assiut, Egypt
- 2Phoniatrics Department, Assiut University Hospital, Assiut, Egypt
- 3Chest Department, Assiut University Hospital, Assiut, Egypt
- 4Chest Department, Assiut University Hospital, Assiut, Egypt
- 5Chest Department, Assiut University Hospital, Assiut, Egypt