"Cities" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings). Descriptors are arranged in a hierarchical structure, which enables searching at various levels of specificity.
MeSH information
A large or important municipality of a country, usually a major metropolitan center.

This graph shows the total number of publications written about "Cities" by people in this website by year, and whether "Cities" was a major or minor topic of these publications.
Bar chart showing 4650 publications over 22 distinct years, with a maximum of 647 publications in 2018
To see the data from this visualization as text, click here.