Received: 13 June 2018
Accepted: 4 January 2019
First Online: 25 January 2019
Ethics approval and consent to participate
: Written informed consent was obtained from all individual participants included in the study. The proposal of this research has been approved in the Ethics Committee of Shahid Beheshti University of Medical Sciences (IR.SBMU.MSP.REC.1396.114). The reporting of this manuscript completely adheres to CONSORT guidelines.
: Not applicable.
: The authors declare that they have no competing interests.
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