1. WHO. Influenza Immunization, vaccines and biological. Available from: http://www.who.int/immunization/topics/influenza/en/index.html/; 2008 [cited 3.12.13].
2. Meeting of the strategic advisory group of experts on immunization, April 2012–conclusions and recommendations;Wkly Epidemiol Rec,2012
3. WHO. Fact sheet N 211. Influenza (Seasonal). Available from: http://who.int/mediacentre/factsheets/fs211/en/index.html/; 2009 [cited 20.06.13].
4. Prevention and control of influenza. Recommendations of the advisory committee on immunization practices (ACIP);Bridges;MMWR Recomm Rep,2003
5. The burden of influenza in East and South-East Asia: a review of the English language literature;Simmerman;Influenza Other Respir Viruses,2008