Presence of regression of Ewing's sarcoma after neoadjuvant antineoplastic therapy
presence of regression of ewing's sarcoma after neoadjuvant antineoplastic therapy
Presence of regression of Ewing's sarcoma after neoadjuvant antineoplastic therapy (observable entity)
presence of regression of ewing's sarcoma after neoadjuvant antineoplastic therapy (observable entity)