Thinking about the type of study will help you build a good clinical question.
Looking the image of the pyramid the quality of the references goes up but the amount of references you might find goes down.
This list goes from the bottom of the pyramid to the top.
Based on the EBM Pyramid. Copyright © 2006–2011. Trustees of Dartmouth College and Yale University. All Rights Reserved. Produced by Jan Glover, David Izzo, Karen Odato and Lei Wang.
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