NGUYEN, Thai Ha, and Thi My Thuc LUU. 2022. “NUTRITION STATUS AND VITAMIN D DEFICIENCY IN CHILDREN FROM 6-11 YEARS OLD AT THE NATIONAL HOSPITAL OF PEDIATRICS”. Vietnam Journal of Nutrition &Amp; Food 14 (5):53-59. https://tapchidinhduongthucpham.org.vn/index.php/jfns/article/view/325.