Rathnasiri, Asanka
Rathnayaka, Harsha
Yasara, Nirmani
Mettananda, Sachith
Article History
Received: 5 November 2021
Accepted: 24 June 2022
First Online: 4 July 2022
Declarations
:
: Ethical approval was obtained from the Ethical Review Committee of the Sri Lanka College of Paediatricians. The approval was obtained from the Regional Director of Health Services, the MOH of the Homagama area and the relevant preschool administrations. Informed written consent was obtained from the legal guardians of all subjects.
: Not applicable.
: The authors declare that they have no competing interests.