Dat, V. Q.; Hung, N. T.; Giang, K. B.; Vu, H. Q.; Otsu, S. Capacity and Use of Diagnostics and Treatment for Patients With Severe Acute Respiratory Infections in the Pre-COVID-19 Era in District and Provincial Hospitals in Viet Nam: Capacity of SARI Management in Viet Nam. Western Pac Surveill Response J 2021, 12, 9.