Arshad, Kashan, Saifullah Sheikh, Syeda Umm-ul-Baneen Naqvi, Ahmad Omair Virk, and Muhammad Asghar Butt. 2016. “Efficacy of Lactobacillus Acidophilus DDS-1, Lactobacillus Bulgaricus, Bifidobacterium Infantis in the Prevention of Necrotizing Enterocolitis in Preterm Neonates”. Annals of Punjab Medical College 10 (3), 131-35. https://doi.org/10.29054/apmc/2016.275.