Omar, H.; Moamen, A.; Abdelhamid, B.; Rady, A.; Farouk, I. Accuracy of Preoperative Evaluation of Inferior Vena Cava Collapsibility Index and Caval Aorta Index for Prediction of Hypotension After Induction of General Anesthesia: A Prospective Observational Study. apic 2023, 27, 449-455.