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Authors
Balaky, Salah Tofik Jalal
Mawlood, Ahang Hasan
Shabila, Nazar P. https://orcid.org/0000-0002-8921-195X
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Article History
Received: 18 April 2019
Accepted: 9 October 2019
First Online: 21 October 2019
Ethics approval and consent to participate
: This study was approved by the Research Ethics Committee of the College of Health Sciences, Hawler Medical University. Administrative permission to access the raw data was obtained from Erbil Chest and Respiratory Disease Center.
: Not applicable.
: The authors declare that they have no competing interests.
