human 7 Article 5 Humans 5 female 5 male 4 necrotizing enterocolitis 4 newborn 4 Enterocolitis, Necrotizing 3 Necrotizing enterocolitis 3 genetics 3 prematurity 3 risk factor 3 Female 2 Infant 2 Infant, Newborn 2 Infant, Newborn, Diseases 2 Short bowel syndrome 2 adult 2 aged 2 controlled study 2 gestational age 2 infant 2 intestine epithelium cell 2 major clinical study 2 microbiology 2 newborn disease 2 pneumonia 2 retrospective study 2 very low birth weight 2 Abdominal radiograph 1