[1] Tianjin Med Univ, Tianjin Inst Neurol, Dept Neurosurg, Gen Hosp, Tianjin 300052, Peoples R China
[2] BloodWorks Northwest Res Inst, Seattle, WA 98102 USA
[3] Lanzhou Univ, Inst Pathol, Sch Basic Med Sci, Lanzhou 730000, Gansu, Peoples R China
[4] Univ Washington, Sch Med, Dept Med, Div Hematol, Seattle, WA 98195 USA