Received: 29 May 2021
Accepted: 4 March 2022
First Online: 11 April 2022
: Approval from the internal review board was taken for this study. Institutional ethical committee clearance was obtained from the IEC, IMS-BHU, Varanasi, India (BHU/2016-17/EC/142). The informed written consent to participate in the study was provided by parents or legal guardians of all the participants (male children between 8 and 15 years of age).
: Not applicable.
: The authors declare that they have no competing interests.