Ankalagi B, Singh PM, Rewari V, Ramachandran R, Das D, Madhusudhan KS, Srivastava DN, Kaur M.
Serial Ultrasonographic-measurement of Gastric Residual Volume in Critically Ill Patients for Prediction of Gastric Tube Feed Intolerance. 
Indian J Crit Care Med
2022;
26
(9):987-992.