- Received April 5, 2013, and in revised form June 12, 2008.
- Accepted for publication September 7, 2013.
- Reprints: Emine Argüder, MD, Department of Chest Diseases, Atatürk Training and Research Hospital, Bilkent Street Number 3, Postal code 06800, Ankara, Turkey. E-mail: .
- The study was presented orally at the 34th Turkish Respiratory Society National Congress (October 2012).
- The authors have no conflicts of interest.
- First published December 15, 2015.
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