Ramadan, Osama, Hanan Rashad, Merite Darwish, and Sohier Dabash. “Effect of Non-Aspirated Gastric Residual Content on Preterm infants’ Health Status”. International journal of health sciences 6, no. S1 (May 1, 2022): 6875–6887. Accessed May 23, 2026. http://www.sciencescholar.us/journal/index.php/ijhs/article/view/6830.