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Newborn Infant
Extremely Low Birth Weight Infant
Infants
Longitudinal Studies
Cohort Studies
Prospective Studies
Risk Factors
Severity of Illness Index
Premature Infant
Regression Analysis
Cystic Fibrosis
Very Low Birth Weight Infant
HIV Infections
Vertical Infectious Disease Transmission
alpha 1-Antitrypsin Deficiency
Asthma
Forced Expiratory Volume
Cystic Fibrosis Transmembrane Conductance Regulator
Case Control Studies
Echocardiography
Co-Publications
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