“Sonographic Caval Aorta Diameter And Inferior Vena Cava Collapsibility Indices For Assessment Of Preoperative Intravascular Volume Status In Elective Surgery Patients”. Journal of Society of Surgeons of Nepal 27, no. 2 (December 31, 2024): 33–37. Accessed July 9, 2026. https://nepjol.info/index.php/JSSN/article/view/76234.