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APA Citation
Dördelmann, M., Rau, G. A., Bartels, D., Linke, M., Derichs, N., Behrens, C., & Bohnhorst, B. (2009). evaluation of portal venous gas detected by ultrasound examination for diagnosis of necrotising enterocolitis. Archives of disease in childhood, 94(3), F183–F187. http://access.bl.uk/ark:/81055/vdc_100135546460.0x00000e