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APA Citation
Gnanapragasam, J. P., Houston, A. B., Doig, W. B., Jamieson, M. P., & Pollock, J. C. (1991). transoesophageal echocardiographic assessment of fixed subaortic obstruction in children.. Heart, 66(4), 281–284. http://access.bl.uk/ark:/81055/vdc_100143574152.0x000031