This number may be less than the total number of works

This export creates a list of PMID's that is saved as a text ('.txt') file on your computer.

First click the 'Save to file' button and then this link to open the Pubmed Batch Entrez site: PubMed Batch Entrez

On the PubMed site, confirm the database is 'PubMed', choose the file that was just downloaded, and click 'Retrieve'