Tran QS, Tran NAD, Truong HH, Nguyen LH, Nguyen TT, Nguyen TTB. RESEARCH ON CHARACTERISTICS AND DIFFERENCES BETWEEN COGNITIVE FUNCTION GROUPS IN THE ELDERLY: A SECONDARY ANALYSIS OF KOREAN BIG DATA. CTJUMP [Internet]. 2026 Mar. 25 [cited 2026 Aug. 24];(96):152-8. Available from: https://tapchi.ctump.edu.vn/index.php/ctump/article/view/4496