Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yoshiki Mikami and Toshimi Hidaka and Takeshi Akisada,Malignant piripheral nerve sheath tumor arising in benign ancient schwannoma: A case report with an immunohistochemical study,Pathology International,13205463,Carlton South,2000-02,50,2,156-161,https://cir.nii.ac.jp/crid/1520009408135527040,https://doi.org/10.1046/j.1440-1827.2000.01019.x