@misc{indiciae0fe8f347c80d, title = {Peripheral primitive neuroectodermal tumor presenting in the retroperitoneum: a case report with immunohistochemical study.}, author = {Tufa Gemechu and Tessema Ersumo}, year = {2002}, url = {https://pubmed.ncbi.nlm.nih.gov/12240569/}, note = {Source identifier: 12240569} }