
Keywords: CRP، پروتئین واکنش پذیر C; AMC, Academic Medical Center; CI, confidence interval; CRP, C-reactive protein; E.C.I., e causa ignota; Hb, hemoglobin; NEC, necrotizing enterocolitis; NICU, neonatal intensive care unit; PNA, postnatal age; SD, standard deviation; UMCG, University Medica