Received: 30 July 2019
Accepted: 17 February 2020
First Online: 14 March 2020
Ethics approval and consent to participate
: The study was approved by the Institutional Ethics Committee of King George’s Medical University U.P., letter number 7976/Ethics/R.Cell-15, dated 04/12/15; Ref. Code: 76th ECM II-B-Thesis/P19. Written and informed consent was obtained from every participant; in those with < 18 years of age, parental (or legal guardian) consent was taken for participating in the study.
: Not applicable.
: None of the authors have any competing interests.