[1] Washington Univ, Sch Med, Dept Med,Div Oncol, Sect Bone Marrow Transplantat & Leukemia Program, St Louis, MO 63110 USA
[2] Fred Hutchinson Canc Res Ctr, Div Clin Res, 1124 Columbia St, Seattle, WA 98104 USA
[3] Univ Washington, Dept Med, Div Hematol, Seattle, WA 98195 USA
[4] Univ Washington, Dept Epidemiol, Seattle, WA 98195 USA
[5] Mem Sloan Kettering Canc Ctr, Dept Med, Weill Cornell Med Coll, Leukemia Serv, 1275 York Ave, New York, NY 10021 USA
[6] Univ Washington, Dept Med, Div Med Oncol, Seattle, WA 98195 USA