Singh, D., Saxena, S., Bogra, J.S., Chaudhary, A.K., Chandra, G. and Bhushan, S. 2019. A comparative study of the effect of parentral and oral glutamine on biochemical parameters and on the duration of ICU stay in critically ill patients. Anaesthesia, Pain & Intensive Care. (Jan. 2019), 123-127.