Received: 29 July 2018
Accepted: 22 November 2018
First Online: 14 December 2018
Ethics approval and consent to participate
: The Institutional Review Boards and the Ethics Committees of Iran University of Medical Sciences and Royan Institute, Tehran, Iran approved this study (date:2015-09-4, ethics code: IR.IUMS.REC.1396.25469 and date:2014-09-4, ethics code: IR.ACECR.ROYAN.REC.1393.2). All procedures performed in studies involving human participants were in accordance with the ethical standards of Iran University of Medical Science, Royan institute and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The participants signed written informed consent for the data collection.
: The authors declare that they have no competing interests.
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