Morshed, M.M., Tripura, S., Hossain, M.A., Rahman, M.M., Mahmud, A. and Somadder, P.D. 2021. The knowledge and perception about COVID-19 among three tribal population of Khagrachari hill district, Bangladesh: a community based cross sectional study on ongoing outbreak. International Journal Of Community Medicine And Public Health. 8, 7 (Jun. 2021), 3207–3214. DOI:https://doi.org/10.18203/2394-6040.ijcmph20212568.