We have not explored the full richness of the Wikipedia data.
For example, complete histories of each language edition are
available, which include editing metadata (timestamps, editor
identity, and comments), the text of each version, and
conversations about the articles; these would facilitate analysis
of edit activity as well as the articles’ changing text. Also,
health-related articles are often mapped to existing ontologies
such as the International Statistical Classification of Diseases
and Related Health Problems (ICD-9 or ICD-10).