Received: 23 September 2019
Accepted: 29 April 2020
First Online: 11 May 2020
Ethics approval and consent to participate
: All study participants were informed verbally and consent to participate was also obtained verbally from the patients directly or from parents. No study participants were included in the present study involving guardians. Each protocol was approved by Departmental Research Ethics and Biosafety Committee (No.D/650/MMG).
: “Not Applicable”.
: The authors declare that they have no competing interests.