Effect of one-shot cognitive behavioral therapy on insomnia and heart rate variability of health care workers at the time of COVID-19 pandemic: a randomized controlled trial.

"Declarations Ethics approvalAll procedures performed in the study were in accordance with the ethical standards of the Isfahan University of Medical Science Research Committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards (ethics code: IR.MUI.MED.REC.1399.1153, Iranian Registry for Clinical Trials (IRCT) code: IRCT20171219037964N4). Studies involving humans and/or animalsNot applicable. Consent to participateFreely given, informed consent to participate in the study was obtained from participants in this study. The informed consents were confirmed by the Ethics Committee of Isfahan University of Medical Sciences. Consent for publicationNot applicable. Conflict of interestThe authors declare no competing interests. Conflict of interest The authors declare no competing interests."

"Funding The current research was granted by the Isfahan University of Medical Sciences."

"Declarations: Ethics approvalAll procedures performed in the study were in accordance with the ethical standards of the Isfahan University of Medical Science Research Committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards (ethics code: IR.MUI.MED.REC.1399.1153, Iranian Registry for Clinical Trials (IRCT) code: IRCT20171219037964N4).: Studies involving humans and/or animalsNot applicable.: Consent to participateFreely given, informed consent to participate in the study was obtained from participants in this study. The informed consents were confirmed by the Ethics Committee of Isfahan University of Medical Sciences.: Consent for publicationNot applicable.: Conflict of interestThe authors declare no competing interests. Ethics approval: All procedures performed in the study were in accordance with the ethical standards of the Isfahan University of Medical Science Research Committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards (ethics code: IR.MUI.MED.REC.1399.1153, Iranian Registry for Clinical Trials (IRCT) code: IRCT20171219037964N4)."