Intensive Therapy Free Survival (ITFS) for Early-Stage Hodgkin Lymphoma (cHL) Including Chemotherapy and Radiation Therapy (IFRT) for Recurrence after Chemotherapy alone - Keller, F; Castellino, S; Constine, L; Voss, S; Thomson, J; Dunphy, C; McCarten, K; Chen, L; Schwartz, C (Klinische Pädiatrie, 2014)