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Meta-analysis of the effects of postnatal steroids on neurodevelopmental impairment among surviving, followed up, infants. Studies are displayed in order of the degree of known contamination of the randomization, Fitzhardinge and O'Shea known to have no contamination, Yeh, Shinwell, and Jones with progressively increasing degrees of contamination, and Cummings, Subhedar and Vincer unknown.
