Ethics approval and consent to participate
This study was approved by the Institutional Human Ethics Committee of Shiraz University of Medical Sciences (IR.SUMS.REC.1398.574). Written informed consent forms were obtained from all the participants included in the study after providing complete information about the study objectives and procedures. Also, they were assured about the confidentiality of their data. All procedures performed in this study were comply with the ethical standards of the institutional and national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.