Effective Refractive Error Coverage (eREC) and Related Factors Among First-Year Medical Students at Pham Ngoc Thach University of Medicine in the Academic Year 2023–2024. pntmj [Internet]. 20 Tháng Mười 2026 [cited 1 Tháng Mười-Một 2026];4(3). Available at: https://bsgdtphcm.vn/ojs/index.php/pnt/article/view/319