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Vascular endothelial growth factor (VEGF) plays an important role in the tumor angiogenesis, and its expression has been supposed to be a biomarker of prognosis in patients with osteosarcoma. There are many studies assessing the prognostic role of VEGF expression in osteosarcoma, and no consistent outcomes are reported. To provide a comprehensive assessment(More)
This study aimed to evaluate the efficacy and safety of topical treatment with natural herbal medicines on recurrent aphthous stomatitis (RAS). Nine electronic databases were searched to identify the randomized controlled trials and clinical controlled trials that reported the potential effect of natural herbal medicines on RAS published in Chinese or(More)
To the Editor, Recently, we carefully read the article by Zhang et al. entitled BSystematic review of high-dose and standard-dose chemotherapies in the treatment of primary well-differentiated osteosarcoma^ published online in Tumor Biology [1]. The investigators preformed a systematic review to evaluate whether high-dose chemotherapy is more efficacious(More)
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