47. CLINICAL CHARACTERISTICS OF VITAMIN D DEFICIENCY RICKETS IN CHILDREN FROM 2-36 MONTHS OLD AT THE PEDIATRIC CENTER, THAI NGUYEN CENTRAL HOSPITAL. YHCĐ [Internet]. 2024 Oct. 30 [cited 2026 Sept. 9];65(6). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/1703