1. World Health Organization http://www.who.int/csr/disease/swineflu/4th_meeting_ihr/en/index.html
2. Note for guidance on harmonization of requirements for influenza vaccines http://www.emea.eu.int/pdfs/human/bwp/021496en.pdf
3. Guidance for industry: clinical data needed to support the licensure of pandemic influenza vaccines US Food and Drug Administration 2007 http://www.fda.gov/BiologicsBloodVaccines/GuidanceComplianceRegulatoryInformation/Guidances/Vaccines/ucm074786.htm
4. European Medicines Agency Guideline on Dossier Structure and Content for Pandemic Influenza Vaccine Marketing Authorisation Application 2008 http://www.emea.europa.eu/docs/en_GB/document_library/Scientific_guideline/2009/09/WC500003869.pdf
5. Relationship between haemagglutination-inhibiting antibody titres and clinical protection against influenza: development and application of a bayesian randomeffects model;Coudeville;BMC Med Res Methodol,2010