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Urinary β2‐microglobulin and bronchopulmonary dysplasia: Trends in preterm infants

The developmental process of bronchopulmonary dysplasia (BPD) is not identical between very preterm infants born small for gestational age (SGA) and those born appropriate for gestational age (AGA). In this study, we compared the pattern of the inflammatory response in infants of each group, by measuring urinary β2‐microglobulin (Uβ2M) as an alternative, concise, and less‐invasive biomarker.