D. Gupta, K. Devpura, and K. K. Agrawal, “Comparison of the inferior vena cava index and inferior vena cava collapsibility index obtained by ultrasound as a measure of body fluid volume status in children with nephrotic syndrome”, Int J Contemp Pediatr, vol. 6, no. 3, pp. 1298–1302, Apr. 2019.