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A flowchart demonstrates the results of our search of the PubMed and Scopus databases. It lists the number of articles initially identified, followed by a list of those excluded by a review of their abstract and a rationale for exclusion. Furthermore, it illustrates which articles were reviewed more thoroughly and those articles that were then excluded or included in the final manuscript on the basis of that analysis. ONFH = osteonecrosis of the femoral head.
