Kawattikul J. Assessment of Volume and Residuals in Stomach Using High-Frequency Ultrasound Waves in Non-Emergency Surgical Patients with Chronic Kidney Disease. Thai J Anesthesiol [internet]. 2025 Jan. 7 [cited 2026 Sep. 20];51(1):23-34. available from: https://he02.tci-thaijo.org/index.php/anesthai/article/view/273055