Most searching in PubMed can be done using Basic Searching skills. This is because PubMed has a term matching algorithm which turns very simple searches into good searches. But if you don't find what you are looking for or you end up with too many results or too few results these additional search skills may be useful.
The most effective way to refine your search results is to consider using some or all the skills presented on this page. If you need some guidance, check out:
If you still end up needing to refine your results consider using the following: