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GHO Metadata link: http://apps.who.int/gho/data/node.metadata, list of metadata items as XML: http://apps.who.int/gho/athena/data/
GHO Codelist example of item "Action area": http://apps.who.int/gho/data/node.metadata.ALCACTIONAREA?lang=en (also available as XML and JSON as a download, http://apps.who.int/gho/athena/data/GBDCHILDCAUSES.xml, http://apps.who.int/gho/athena/data/GBDCHILDCAUSES.json)
We can use the existing WHO queries as an approximation. The queries can be customised and made through the API.
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