Ethical approval and consent to participate
The participants were assured that their data would remain confidential. Written informed consent was obtained from the participants. The research proposal has been registered in the Iranian Clinical Trial Registration Center prospectively (IRCT20180826040868N1) (Date of full registration: 15.9.2018). Also, it has been approved by the Ethics Committee of North Khorasan University of Medical Sciences (code: IR.NKUMS.REC.1397.035). All methods were carried out in accordance with relevant guidelines and regulations.