Literature review can be traditional reviews which is unstructured or systematic reviews which are more structured and follows certain criteria.

Hi Abdulaziz, have a look at [ http://www.cochrane.org/training/cochrane-handbook ].

Thank you very much for every one who participate the answer of the above question.

Generally every step in scientific research should be systematic because science itself is a systematic study. therefore it is ideal for scientific research to systematize the literature review.

Hi Abdelaziz,

I will provide you a link to for common mistakes to avoid while publishing a systemic review

https://www.elsevier.com/connect/authors-update/the-5-most-common-mistakes-to-avoid-when-you-are-publishing-a-systematic-review