Active surveillance for adverse events in patients on longer treatment regimens for multidrug-resistant tuberculosis in Viet Nam. - Ngoc NB; Vu Dinh H; Thuy NT; Quang DV; Huyen CTT; Hoa NM; Anh NH; Dat PT; Hoa NB; Tiemersma E; Nhung NV (PloS one, 2021)