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Boon, N., M. Norell, J. Hall, K. Jennings, L. Penny, C. Wilson, J. Chambers, و R. Weston. National Variations in the Provision of Cardiac Services in the United Kingdom: Second Report of the British Cardiac Society Working Group, 2005. BMJ Group, 2006.

Boon, N., et al. National Variations in the Provision of Cardiac Services in the United Kingdom: Second Report of the British Cardiac Society Working Group, 2005. BMJ Group, 2006.