“IMPROVED SAPHENOUS VEIN–PRESERVING ENDOVENOUS LASER ABLATION TECHNIQUE IN THE TREATMENT OF CHRONIC SUPERFICIAL VENOUS INSUFFICIENCY OF THE LOWER EXTREMITIES” (2026) Tạp chí Y học Cộng đồng, 67(English Version No 1, 2026). doi:10.52163/yhc.v67iE1.5283.