Received: 2 December 2021
Accepted: 5 April 2022
First Online: 13 April 2022
: This study was approved by the Ethics Committee of Rajaie Cardiovascular Medical and Research Center, Tehran. In addition, the study was registered in the Iranian Registry of Clinical Trials with the code of IR.RHC.REC.1400.042. Obtained written informed consent from parents of children under 7-years-old, to participate in the study.
: Not applicable.
: All authors have none to declare.