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Johnston, G. M.; Eastment, J. K.; Woods, J. L. N.; et al. (2002). "The confidential enquiry into perioperative equine fatalities (CEPEF): mortality results of Phases 1 and 2". Journal of Veterinary Anesthesia and Analgesia. 29 (4): 159–170. doi:10.1046/j.1467-2995.2002.00106.x. PMID28404360.