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" ... Finally, it is time to start writing. Like any other paper, this will need to have an Introduction, which explains what has been done before (for example, in previous reviews) and what has motivated your review paper (i.e. what question are you trying to answer, and for whom). It may have Methods and Results sections, particularly if you have taken a systemmatic and quantitative approach to your review, or it may be a more narrative review, divided into sections that help you tell the story and elucidate the topic. It should certainly have a Conclusions section: what should change as a result of what you have found and discussed in your review? ... "