Text and Data Mining valid from 2020-03-05
Received: 4 February 2020
Accepted: 25 February 2020
First Online: 5 March 2020
Ethics approval and consent to participate
: The Ethics Committee of Iran University of Medical Sciences confirmed the study protocol (code no. IR.IUMS.REC1395.9413323002) and written informed consent was obtained from the children’s parents.
: Not applicable.
: The authors declare that they have no conflicts of interest.