PubMed is a free bibliographic database that comprises more that 20 million citations for biomedical literature from MEDLINE, life science journals, and online books. It is produced and maintained by the US National Library of Medicine (the world's largest medical library).
Medical Subject Headings (or MeSH) is a controlled vocabulary used to index articles in PubMed. Using MeSH to develop your search means you do not need to worry about synonyms and spelling variations and will increase the relevancy of your results.
Below is a short video (~6mins) demonstrating how to do a search in PubMed using MeSH.
Brown, R., (2013, January 10).
It's important to compliment your MeSH search with keywords for the following reasons:
When brainstorming keywords, it's important to consider variant spellings, synonyms, and plural forms.
Below is a short video (~7mins) showing you how to search PubMed using keywords.
Brown, R. (2013, January, 10). Searching PubMed with Keywords [Video file]. Retrieved from https://www.youtube.com/watch?v=eEY1r_GDzcg