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Liu D, Shi W, Shi Y, Wang D, Xiao H, Li W, et al. (June 2013). "Origin and diversity of novel avian influenza A H7N9 viruses causing human infection: phylogenetic, structural, and coalescent analyses". Lancet. 381 (9881): 1926–1932. doi:10.1016/S0140-6736(13)60938-1. PMID23643111. S2CID32552899.
Alexander DJ, Brown IH (April 2009). "History of highly pathogenic avian influenza". Revue Scientifique et Technique. 28 (1): 19–38. doi:10.20506/rst.28.1.1856. PMID19618616.
Liu D, Shi W, Shi Y, Wang D, Xiao H, Li W, et al. (June 2013). "Origin and diversity of novel avian influenza A H7N9 viruses causing human infection: phylogenetic, structural, and coalescent analyses". Lancet. 381 (9881): 1926–1932. doi:10.1016/S0140-6736(13)60938-1. PMID23643111. S2CID32552899.
"Avian flu". The Royal Society for the Protection of Birds (RSPB). Retrieved June 25, 2024.
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Liu D, Shi W, Shi Y, Wang D, Xiao H, Li W, et al. (June 2013). "Origin and diversity of novel avian influenza A H7N9 viruses causing human infection: phylogenetic, structural, and coalescent analyses". Lancet. 381 (9881): 1926–1932. doi:10.1016/S0140-6736(13)60938-1. PMID23643111. S2CID32552899.