Abstract
Abstracts for systematic reviews should consist of BACKGROUND, OBJECTIVE, RETRIEVAL STRATEGY, LITERATURE EVALUATION, DATA SYNTHESIS, and CONCLUSION.

? BACKGROUND: Explain the importance of the review question.
? OBJECTIVE: State the precise objective of the review.
? RETRIEVAL STRATEGY: Summarize retrieval methods, retrieval staff, years searched, keywords, language, databases, whether manual search was used , and information about relevant experts. Describe inclusion and exclusion criteria used to select studies.
? LITERATURE EVALUATION: State the proportion of studies initially identified which met selection criteria, categories of articles, and the numbers for each category.
? DATA SYNTHESIS: State the data of retrieval if possible. Details should include concrete interventions, outcomes, adverse events, side effects, etc.
? CONCLUSION: The conclusions and their applications should be clearly stated, limiting interpretation to the domain of the review.

Text
Academic background: This section should begin with a brief introduction of the study purpose, necessity, relevant concepts, and review range. Explain the development, current situation, and existing problems related to the review topics.

Objective: State the primary objective of the review in detail.

Materials and methods:
? Data retrieval: searcher, search time, key words, search databases, searching software, and manual searching.
? Retrieval methods: inclusion and exclusion criteria, literature classification and data analysis.

Technique routine evaluation: validity evaluation, safety evaluation, ethics evaluation, and health economics evaluation are required.

Comprehensive evaluation:

Conclusion:

References: More than 30 references should be given. Fifty percent of the references should be from research published within the past three years.

Supplementary
? Contributors: state authors’ contributions to the work described in the manuscript.
? Funding and support: funding source and grant number.
? Conflict of interest statement
? Ethics approval
? What is already known on this topic: state acknowledged findings
? What this study adds: state new points or conclusion of the study