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APA Citation
Dalziel, S. R., Rea, H. H., Walker, N. K., Parag, V., Mantell, C., Rodgers, A., & Harding, J. E. (2006). long term effects of antenatal betamethasone on lung function: 30 year follow up of a randomised controlled trial. Thorax, 61(8), 678–683. http://access.bl.uk/ark:/81055/vdc_100135148175.0x000022