Pandemic influenza preparedness: sharing of influenza viruses and access to vaccines and other benefits: update on the pandemic influenza A (H1N1) 2009 virus: report by the Secretariat
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(2010). Pandemic influenza preparedness: sharing of influenza viruses and access to vaccines and other benefits: update on the pandemic influenza A (H1N1) 2009 virus: report by the Secretariat. World Health Organization. http://www.who.int/iris/handle/10665/2341