Ma NH, Truong NK, Le NL. COMPARATIVE EVALUATION OF CANINE RETRACTION USING NITI CLOSED COIL SPRING AND ELASTIC CHAIN AT CAN THO UNIVERSITY OF MEDICINE AND PHARMACY HOSPITAL. CTJUMP [Internet]. 2023 Jul. 31 [cited 2026 Oct. 3];(62):129-34. Available from: https://tapchi.ctump.edu.vn/index.php/ctump/article/view/1514