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Article History

First Online: 28 August 2020

Declarations

:

: This study was funded by the Department of Pediatrics, Faculty of Medicine, Alexandria University, Egypt.

: Mamdouh El-Ghandour, Bahaa Hammad, Mohamed Ghanem, and Manal Antonios have no potential conflicts of interest that might be relevant to the contents of this manuscript.

: All procedures performed in this study involving human participants were in accordance with the ethical standards of the national research committee and with the 1964 Helsinki Declaration and its later amendments. The university ethical committee approved the study design.

: Informed consent was obtained from all patients and caregivers for participation in the study and publication.

: All studied cases were asked a written consent after full explanation of the study.

: Not applicable.

: All the raw data and master table of the studied cases are available at the corresponding author who is ready to share it with any researcher.

: Not applicable.

: Dr. Mamdouh El-Ghandour invented the idea of this clinical trial and performed the ecchocardiographic assessment of the studied cases blindly. Dr. Bahaa Hammad screened the cases as neonatologist and followed them clinically blindly. Dr. Mohamed Ghanem collected the cases and supervised the double blind technique. Dr. Manal A. M. Antonios supervised data collection, statistical assessment, interpretation and manuscript preparation for publication.