Koopaie, Maryam
Salamati, Mahsa
Montazeri, Roshanak
Davoudi, Mansour
Kolahdooz, Sajad
Article History
Received: 14 June 2021
Accepted: 7 December 2021
First Online: 18 December 2021
Declarations
:
: This study was approved by Tehran University of Medical Science Ethical Committee (ethical code: IR.TUMS.DENTISTRY.REC.1398.099). After describing the study objectives, written informed consent was obtained from a parent or guardian for participants under 16 years old.
: Not applicable.
: The authors declare that they have no competing interests.