“ACCURACY OF THE TRANSVERSE DIAMETER OF RIGHT COMMON FEMORAL VEIN BY ULTRASOUND IN THE SUPINE POSITION FOR PREDICTING POST-SPINAL HYPOTENSION DURING CESAREAN DELIVERY”. The Research of Medical Science Review, vol. 3, no. 4, Apr. 2025, pp. 2820-8, https://medicalsciencereview.com/index.php/Journal/article/view/3377.