Arshad, K.; Sheikh, S.; Naqvi, S.; Virk, A.; Butt, M. Efficacy of Lactobacillus Acidophilus DDS-1, Lactobacillus Bulgaricus, Bifidobacterium Infantis in the Prevention of Necrotizing Enterocolitis in Preterm Neonates. apmc 2016, 10, 131-135.