PubMed is a database of journal publications in biomedical sciences.
To search online, go to NCBI National Library of Medicine
The advanced search is more friendly to use if you need to restric searches to specific fields.
1. To use the advanced search, click on "Preview/Index" to start.
2. Select a field name and type in your search query.
3. Click on the logic options.
4. Click on "Preview" or "Go".