PB2063: CHARACTERISTICS AND THERAPEUTIC RESULTS OF PATIENTS WITH REFRACTORY/RELAPSED HODGKIN LYMPHOMA IN A TUNISIAN CENTER - F. Kammoun; F. Kallel; M. Charfi; I. Ben Amor; N. Toumi; H. Ben Salah; L. Torjemane; D. Baloumi; I. Frikha; L. Khalifa; Y. Fakhfakh; O. Kassar; et al. (HemaSphere, 2022)