Zdroj: Immunization surveillance, assessment and monitoring: Measles Surveillance Data. WHO [online]. 2012, 2012-10-25 [cit. 2013-01-24]. Dostupné z: http://www.who.int/immunization_monitoring/diseases/measles_monthlydata/en/index.html
Zdroj: Immunization surveillance, assessment and monitoring: Measles. WHO [online]. 2012, 2012-10-16 [cit. 2013-01-24]. Dostupné z: http://www.who.int/immunization_monitoring/diseases/measles/en/
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