Immunophenotypic and genotypic features, clinical characteristics, and treatment outcome of adult pro-B acute lymphoblastic leukemia: results of the German multicenter trials GMALL 03/87 and 04/89. - Ludwig,W.D.; Rieder,H.; Bartram,C.R.; Heinze,B.; Schwartz,S.; Gassmann,W.; Loffler,H.; Hossfeld,D.; Heil,G.; Handt,S.; Heyll,A.; Diedrich,H.; et al. (Blood, 1998)