In your search for (medical) literature these LibGuides 
may also be of interest to you:
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PubMed contains more than 34 million biomedical references from the MEDLINE database. You can search over 5600 biomedical journals from 80 countries at a time.
You will find an extensive PubMed tutorial in the LibGuide Training Pubmed 
.This is also used in the medical curriculum at UMC Utrecht.
In the above mentioned training the following items are discussed:
The Cochrane Library contains a complete overview of all Cochrane Systematic Reviews. In addition, you can search in five more databases within Cochrane, including DARE (systematic reviews that have not been developed by Cochrane) and CENTRAL (the database of RCTs/clinical trials compiled by Cochrane).
The Cochrane Library focusses particularly on the effectiveness of interventions, so is usefull for therapy-related questions.
You will find more information on searching in the Cochrane Library in the LibGuide EBM Literature Sources in the tab Cochrane:
The subject librarians and biomedical information specialists of Utrecht University Library offer support for searching literature for a clinical question to the following target audiences:
