Oanh, N.T.P., Anh, T.Q., Tùng, B.V. , Tân, Đặng Q., Hà, H.T.T. and Hường, C.T. 2022. 29. Knowledge of using sanitary iatrines of the the northern mountainers in 2021. Journal of Medical Research. 156, 8 (Aug. 2022), 252-260. DOI:https://doi.org/10.52852/tcncyh.v156i8.1005.