The effect of the simulated intrauterine sound on behavioral and physiological indices of pain during capillary blood sampling for screening preterm infants: a randomized clinical trial study.

"Declarations Ethics approval and consent to participateThe ethical approval for this study was provided by the Ethics Committee of Guilan University of Medical Sciences, Rasht, Iran, with the code of IR.GUMS.REC.1398.070. Also, the study was registered in the Iranian Registry of Clinical Trials with the code of IRCT20190520043648N1 (04/07/2019). The aim and the methods of data collection were described to all parents, and their written informed consents were obtained. They were ensured that participation of their neonate in the study was voluntary. We also adhered to the ethical principles of medical research reported in the Declaration of Helsinki. Consent for publicationNot applicable. Competing interestsThere is no competing interest. Competing interests There is no competing interest."

"Funding This study was a piece of a master’s thesis in nursing that was financially supported by Guilan University of Medical Sciences (GUMS), Rasht, Iran. [grant number: 98021407]."

"Declarations: Ethics approval and consent to participateThe ethical approval for this study was provided by the Ethics Committee of Guilan University of Medical Sciences, Rasht, Iran, with the code of IR.GUMS.REC.1398.070. Also, the study was registered in the Iranian Registry of Clinical Trials with the code of IRCT20190520043648N1 (04/07/2019). The aim and the methods of data collection were described to all parents, and their written informed consents were obtained. They were ensured that participation of their neonate in the study was voluntary. We also adhered to the ethical principles of medical research reported in the Declaration of Helsinki.: Consent for publicationNot applicable.: Competing interestsThere is no competing interest. Ethics approval and consent to participate: The ethical approval for this study was provided by the Ethics Committee of Guilan University of Medical Sciences, Rasht, Iran, with the code of IR.GUMS.REC.1398.070. Also, the study was registered in the Iranian Registry of Clinical Trials with the code of IRCT20190520043648N1 (04/07/2019). The aim and the methods of data collection were described to all parents, and their written informed consents were obtained. They were ensured that participation of their neonate in the study was voluntary. We also adhered to the ethical principles of medical research reported in the Declaration of Helsinki."