Received: 14 January 2021
Accepted: 30 March 2021
First Online: 4 June 2021
: The study protocol received ethical approval of National Nutrition and Food Technology Research Institute (NNFTRI) ethical committee (IR.SBMU.nnftri. Rec.1396.166). All methods were performed according to the relevant guidelines and regulations. Written informed consent was obtained from all students and their parents.
: Not applicable.
: The authors declare that they have no conflict of interest.