Received: 9 July 2020
Accepted: 14 December 2020
First Online: 7 January 2021
Ethics approval and consent to participate
: Indira Gandhi child health institute’s ethical committee, Bengaluru, Karnataka, India. IGICHirb0345673, on 1/12/19. Written consent obtained from parents.
: Written and verbal consent taken from parents.
: The author declares that he has no competing interests.