Funding for this research was provided by:
Ministry of Health and Medical Education (132-1491)
Received: 3 March 2017
Accepted: 24 July 2018
First Online: 20 August 2018
Ethics approval and consent to participate
: The study protocol was approved by Tehran University of Medical Sciences Institutional Review Board (TUMS-IRB). Oral informed consents were obtained from all participants and all data were processed anonymously.
: Not applicable.
: The authors declare that they have no competing interests.
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