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Preliminary standardized data extraction items.
| 1.Publication details | Study title List of authors |
| Article language | |
| Institution | |
| Year of publication | |
| Country | |
| Publisher | |
| Type of funding | |
| 2.Characteristics of intended participants | Age |
| Sex | |
| Sample size | |
| 3.Methodological details | Study design |
| Type of interventions | |
| Type of comparators | |
| Types of outcome measures | |
| 4.Results and discussion | Significant findings |
| Conclusions | |
| Limitations | |
| Suggestion for future research |
