Received: 18 August 2020
Accepted: 11 March 2021
First Online: 17 March 2021
: This study was approved by the ethics committee of the Urmia University of Medical Sciences (#IR.UMSU.REC.1399.021). The researcher introduced himself to the participants and explained the study objectives, obtained written consent from them, and assured them of the confidentiality of data.
: Not applicable.
: We declare that there is no conflict of interest between the authors.