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APA Citation
Andrews, R. E., McMahon, C. J., Yates, R. W. M., Cullen, S., de Leval, M. R., Kiely, E. M., Spitz, L., & Sullivan, I. D. (2006). echocardiographic assessment of conjoined twins. Heart, 92(3), 382–387. http://access.bl.uk/ark:/81055/vdc_100135162490.0x000013