Low levels of tissue inhibitors of metalloproteinases with a high matrix metalloproteinase-9/tissue inhibitor of metalloproteinase-1 ratio are present in tracheal aspirate fluids of infants who develop chronic lung disease
Children's Mercy Hospitals and Clinics, University of Missouri-Kansas City, School of Medicine, Department of Pediatrics, Section of Neonatal-Perinatal Medicine, Kansas City, Missouri, USA. ie23@georgetown.edu