Serum retinol profiles on very low birth weight infants: effect of dexamethasone therapy for bronchopulmonary dysplasia : R.H. Mupanemunda, L.R. Fraher, D.S.C. Lee and G.W. Chance, (Introduced by Dr M Silverman), Division of Neonatal-Perinatal Medicine, St Joseph's Health Centre, Department of Paediatrics, University of Western Ontario, London, Ontario (Canada)