Funding for this research was provided by:
Tabriz University of Medical Sciences (No. 5.53.332/17 April 2016)
Research and Technology Deputy of Tabriz University of Medical Sciences (No. 5.53.332/17 April 2016)
Received: 18 April 2019
Accepted: 12 February 2020
First Online: 19 February 2020
Ethics approval and consent to participate
: The proposal and the questionnaire were approved by the Ethic Committee of Tabriz University of Medical Science; Code number: IR.TBZMED.REC.1395.1289. The anonymous questionnaires were used to collect data. All participants (parents) were given written consent forms to observe and sign along with oral information was provided for them and all their questions were answered and clarified. In the case of children under 16, the consent forms were observed and then filled in by the parent, the guardian, or the caregiver.
: All authors approved of the publication of the information provided in this manuscript.
: The authors declare that they have no competing interests.