Text and Data Mining valid from 2019-04-22
Received: 3 September 2018
Accepted: 19 December 2018
First Online: 22 April 2019
Compliance with ethical standards
: The study was approved by the Regional Ethical Committee of Tabriz University of Medical Sciences and all procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments.
: The authors declare that they have no conflict of interest.
: The study was approved by the Regional Ethical Committee of Tabriz University of Medical Sciences (No: IR.TBZMED.RCE.1395.687).
: Informed consent was obtained from all participants included in the study.