Received: 17 March 2021
Accepted: 5 September 2021
First Online: 10 November 2021
: This study was approved by the institutional ethics and review board, Christian Medical College, Vellore, TN, India (IRB Min. No. 13781 dated 27.01.2021.). Consent from participants was not required for retrospective studies according to the institutional review board and the Indian Council of Medical Research (ICMR 2017 guidelines—National Ethical Guidelines for Biomedical & Health Research involving Human Participants, 2017: Mathur Roli, Swaminathan Soumya).
: Not applicable.
: The authors have no conflict of interest to declare.