Unusual sites of Ewing sarcoma (ES): a retrospective multicenter 30-year experience of the Italian Association of Pediatric Hematology and Oncology (AIEOP) and Italian Sarcoma Group (ISG).

Unusual sites of Ewing sarcoma (ES): a retrospective multicenter 30-year experience of the Italian Association of Pediatric Hematology and Oncology (AIEOP) and Italian Sarcoma Group (ISG).