February 01, 2008 [posted]
PubMed® Subject Subset Strategies Updated for 2008
![](https://webarchive.library.unt.edu/eot2008/20090509212130im_/http://www.nlm.nih.gov/pubs/techbull/new_tb_graphics/a.gif)
a ll PubMed subject subset strategies are reviewed at least once a year to see if modifications are necessary. Modifications may include revisions due to changes in MeSH vocabulary, adding or deleting terms, and changing parts of a strategy to try to optimize retrieval. The following subset strategies were recently revised: Bioethics, Cancer, Complementary Medicine, and Systematic Reviews.
![](https://webarchive.library.unt.edu/eot2008/20090509212130im_/http://www.nlm.nih.gov/pubs/techbull/new_tb_graphics/black_pixel.gif)
PubMed® Subject Subset Strategies Updated for 2008. NLM Tech Bull. 2008 Jan-Feb;(360):e7.