• Searching for studies (C24-C38)
• Selecting studies to include in the review (C39-C42)
• Collecting data from included studies (C43-C51)
• Assessing risk of bias in included studies (C52-C60)
• Synthesizing the results of included studies (C61-C73)
• Assessing the quality of evidence and summarizing the findings (C74-C75)
• Reference