Fig. 2From: The efficacy and safety comparison of first-line chemotherapeutic agents (high-dose methotrexate, doxorubicin, cisplatin, and ifosfamide) for osteosarcoma: a network meta-analysisRisk of bias: graph and summary of the included studies. a Reviewers’ judgments of each risk of bias item for eligible studies. b The judgments of each item of risk of bias, presented as percentages across all eligible studiesBack to article page