Text and Data Mining valid from 2019-08-14
Received: 5 August 2018
Accepted: 9 August 2019
First Online: 14 August 2019
Ethics approval and consent to participate
: This study was approved by the Ethics Committee of Tehran University of Medical Sciences. All the studied participants read and signed the informed consent forms.
: Not applicable.
: The authors declare that they have no competing interests.