World Health Organization - Cancer Country Profiles, 2014.
Accessed online August 2018
World Health Organization Country profiles 2016
Each year WHO and UNICEF jointly review reports submitted by Member States regarding national immunization coverage, finalized survey reports as well as data from the published and grey literature. Based on these data, with due consideration to potential biases and the views of local experts, WHO an...d UNICEF attempt to distinguish between situations where the available empirical data accurately reflect immunization system performance and those where the data
are likely to be compromised and present a misleading view of immunization coverage while jointly estimating the most likely coverage levels for each country.
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