作者单位:Univ Washington, Internal Med Residency Program, Seattle, WA 98195 USA[1]Univ Washington, Dept Lab Med, Div Hematopathol, Seattle, WA 98195 USA[2]Univ Washington, Dept Med, Div Hematol, Seattle, WA 98195 USA[3]Fred Hutchinson Canc Res Ctr, Publ Hlth Sci Div, 1124 Columbia St, Seattle, WA 98104 USA[4]Fred Hutchinson Canc Res Ctr, Div Clin Res, 1100 Fairview Ave N,D2-190, Seattle, WA 98109 USA[5]