TY - RPRT TI - Atypical primitive neuroectodermal tumors. Comparative light and electron microscopic and immunohistochemical studies on peripheral neuroepitheliomas and Ewing's sarcomas. AU - T Hasegawa AU - T Hirose AU - E Kudo AU - K Hizawa AU - S Yamawaki AU - S Ishii PY - 1991 DO - 10.1111/j.1440-1827.1991.tb03211.x UR - https://pubmed.ncbi.nlm.nih.gov/1659113/ ID - 1659113 ER -