While it's true you'd get XML from NIH, as a first pass, just extracting the MEDLINE titles and abstracts into plaintext and then running this over them would b

While it's true you'd get XML from NIH, as a first pass, just extracting the MEDLINE titles and abstracts into plaintext and then running this over them would be enough. You need to complete a license agreement (annoyingly) to download them. But there's no fee or anything.