COMPARISON OF THE EFFECTIVENESS AND SAFETY OF FLEXIBLE ENDOSCOPIC NEPHROLITHOTOMY AND PERCUTANEOUS MICROTUNNEL NEPHROLITHOTOMY IN THE TREATMENT OF 10–30 MM KIDNEY STONES AT XANH PÔN GENERAL HOSPITAL. YHCĐ [Internet]. 2026 June 25 [cited 2026 Sept. 8];67(6). Available from: https://tapchiyhcd.vn/index.php/yhcd/article/view/5470