Funding for this research was provided by:
Mazandaran University of Medical Sciences (IR.MAZUMS. Rec.1396.3074)
Tehran University of Medical Sciences (IR.TUMS.IKHC.Rec.1399.075)
Received: 2 July 2020
Accepted: 8 March 2021
First Online: 25 March 2021
: The study was provided ethical approval by the Mazandaran No: IR. MAZUMS. Rec.1396.3074 and Tehran IR. TUMS.IKHC. Rec.1399.075. The study obtained the consent of all participants and they signed and were informed of consent form prior to the investigation. Consent was also obtained from a parent or guardian on behalf of any participant under the age of 16. All participants were assured about confidentially and that their contribution would be on a voluntary basis as well as that they had full rights to withdraw from the study at any time.
: Not applicable.
: The authors declare that they have no competing interest.