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APA Citation
Hayhurst, C., Lebus, C., Atkinson, P. R., Kendall, R., Madan, R., Talbot, J., Ross, P., & Lewis, D. (2011). an evaluation of echo in life support (ELS): is it feasible? What does it add?. Emergency medicine journal, 28(2), 119–121. http://access.bl.uk/ark:/81055/vdc_100137791710.0x00000f