“CLINICAL SYMPTOMS AND RESPIRATORY COMPLICATIONS AMONG CHILDREN WITH SEASONAL INFLUENZA AT NATIONAL CHILDREN’S HOSPITAL, VIETNAM, 2020-2021: SEASONAL INFLUENZA AT NATIONAL CHILDREN’S HOSPITAL, VIET NAM”. The Southeast Asian Journal of Tropical Medicine and Public Health, vol. 52, no. 6, Nov. 2021, pp. 790-9, https://journal.seameotropmednetwork.org/index.php/jtropmed/article/view/558.