Funding for this research was provided by:
Tehran University of Medical Sciences and Health Services (26052)
Text and Data Mining valid from 2019-02-18
Received: 17 July 2018
Accepted: 30 January 2019
First Online: 18 February 2019
Ethics approval and consent to participate
: This research has been approved by Tehran University of Medical Sciences ethics committee; reference number IR.TuMS.REC.1394.439.
: Not applicable.
: The authors declare that they have no competing interests.
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