OBSERVATIONAL COHORT STUDY TO CHARACTERIZE THE SAFETY OF ALLOGENEIC HEMATOPOIETIC CELL TRANSPLANTATION (HCT) FOR PATIENTS WITH CLASSICAL HODGKIN LYMPHOMA (CHL) TREATED WITH NIVOLUMAB
OBSERVATIONAL COHORT STUDY TO CHARACTERIZE THE SAFETY OF ALLOGENEIC HEMATOPOIETIC CELL TRANSPLANTATION (HCT) FOR PATIENTS WITH CLASSICAL HODGKIN LYMPHOMA (CHL) TREATED WITH NIVOLUMAB