The report of meta-analysis literature needs to search VIP Chinese sci-tech periodical database, China HowNet database, online version of Chinese biomedical literature database, Wanfang database and Pubmed database, Web of science database, English database and meta.

Matters needing attention in meta-analysis:

Import the retrieved documents into EndNote or other document management tools. At this time, you must remember the times of document retrieval and screening, otherwise it will lead to repeated futility when making the flow chart of document screening. The use of endnotes was also introduced in previous articles of scientific research papers. I hope everyone can skillfully use this software to reduce the resistance in the process of literature screening.