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Study selection flowchart. *One RCT reported data on three documents (results on 2-year follow-up, 3-year follow-up, and 5-year follow-up), one RCT reported data on two documents (results on 6-month follow-up and 3-year follow-up), one RCT reported data on three documents (results on 2-year follow-up, 3-year follow-up, and 5-year follow-up), one RCT reported data on two documents (results on 2-week follow-up and 1-year follow-up). RCT: Randomized controlled trial
