References
Pawel BR, Hamoudi AB, Asmar L, Newton WA Jr, Ruymann FB, Qualman SJ, Webber BL, Maurer HM. Undifferentiated sarcomas of children: pathology and clinical behavior--an Intergroup Rhabdomyosarcoma study. Med Pediatr Oncol. 1997 Sep;29(3):170-80. PMID: #9212841#