Text and Data Mining valid from 2018-05-31
Received: 11 January 2018
Accepted: 16 May 2018
First Online: 31 May 2018
Ethics approval and consent to participate
: Ethical approval for the study was obtained from the Research Ethics Committee of the Mashhad University (with the code 931232). The clinical trial code is IRCT 2015021721116 N1. All participants provided written informed consent.
: The authors declare that they have no competing interests.
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