Received: 30 September 2020
Accepted: 7 February 2021
First Online: 13 February 2021
Ethics approval and consent to participate
: This study was approved by the Institutional Ethics Committee of Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER) vide reference no. JIP/IEC/2016/1028, Puducherry. Written informed consent was obtained from the legally acceptable representative of the deceased for collecting the sample and its scientific use.
: Not required by the ethics committee.
: The authors declare no competing interests.