If you are a Health Sciences/Medicine student you may find it helpful to organise your literature review using the matrix (or a simplified version of it) presented in Health sciences literature review made easy the matrix method.
This example is from page 42 of the chapter titled 'Review matrix: a versatile method', from the book above.
[What is the question you are trying to answer?]
[List of complete citations here]
Alternatively, you may use a spreadsheet.
You also have the option of adapting Mendeley or Zotero to be used with a matrix by using notes or custom fields in your referencing database.
