SOME FACTORS RELATED TO THE SEVERITY OF PNEUMONIA IN CHILDREN UNDER 5 YEARS OLD WITH RSV INFECTION AT TUYEN QUANG PROVINCIAL GENERAL HOSPITAL. YHCĐ [Internet]. 2026 Jan. 15 [cited 2026 Sept. 9];67(1). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/4180