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The authors of this study did not have access to primary data, just metadata extracted from previously published studies. Because of this, the current study does not influence the well-being or privacy of patients.","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}},{"value":"Institutional review board approval was not required because the study is a systematic review and meta-analysis. The authors of this study did not have access to primary data, just metadata extracted from previously published studies. Because of this, the current study does not influence the well-being or privacy of patients.","order":6,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"No study subjects or cohorts have been previously reported, except as a part of the primary studies included in this meta-analysis, which are listed in the reference list.","order":7,"name":"Ethics","group":{"name":"EthicsHeading","label":"Study subjects or cohorts overlap"}},{"value":"\u2022 retrospective\u2022 meta-analysis\u2022 performed at one institution","order":8,"name":"Ethics","group":{"name":"EthicsHeading","label":"Methodology"}}]}}