Received: 24 May 2021
Accepted: 26 July 2021
First Online: 31 July 2021
: We have taken written permission from the ethical committee of the Department of Microbiology at the University of Chittagong to conduct the study, and written consent has been taken from the patient's attended guardian with informing aims and objectives, merits, and demerits of participation in the study. The permission from the ethical committee came with a letter without mentioning any reference number.
: Not applicable.
: The authors declare that they have no competing interests.