G. Helbig, “AUTOLOGOUS HEMATOPOIETIC STEM CELL TRANSPLANTATION FOR HIGH-RISK ACUTE LYMPHOBLASTIC LEUKEMIA: NON-RANDOMIZED STUDY WITH A MAXIMUM FOLLOW-UP OF MORE THAN 22 YEARS”, Mediterr J Hematol Infect Dis, vol. 6, no. 1, p. e2014047, Jun. 2014.