Funding for this research was provided by:
Liver and gastrointestinal diseases research center, Tabriz University of medical sciences, Tabriz, Iran
Received: 18 December 2019
Accepted: 4 May 2020
First Online: 17 May 2020
Ethics approval and consent to participate
: This study was conducted according to the guidelines laid down in the Declaration of Helsinki and all procedures involving research study participants were approved by the Ethics Committee of Tabriz University of Medical Sciences (Ethics code: IR.TBZMED.REC.1398.1197). Written informed consent was obtained from all participants.
: None required.
: The authors declare no conflict of interest.