Maluangnon, Chailat, et al. “Intrarenal Venous Flow Patterns and Their Association With Successful Fluid Removal in Critically Ill Patients: A Prospective Observational Exploratory Study”. The Ultrasound Journal, vol. 17, no. 1, Oct. 2025, p. 44, https://mattioli1885journals.com/index.php/theultrasoundjournal/article/view/18160.