Ethics
The protocol of the present study was approved by the Ethics Committee of Iran University of Medical Sciences with the ethics code: IR.IUMS.REC.1399.1417. All participants were fully informed about the objectives and process of the study and informed written consent was obtained from them. The information obtained during the study process remained completely confidential. All participants were informed that they could withdraw from the study at any time. No fees were paid for the study and all services were completely free. Only one code was assigned to the study, and all study data were entered into data systems anonymously. All participants were given the researcher's phone number at the beginning of the study, as participants were asked to inform the researcher of any side effects.