[1] VET ADM HOSP, SERV MED, HEMATOL SECT, SEATTLE, WA 98108 USA
[2] VET ADM HOSP, SERV MED, MED GENET SECT, SEATTLE, WA 98108 USA
[3] UNIV WASHINGTON, SCH MED, DEPT MED, SEATTLE, WA 98195 USA
[4] UNIV WASHINGTON, SCH MED, DEPT GENET, SEATTLE, WA 98195 USA
[5] UNIV PENN, PRESBYTERIAN MED CTR, HEMATOL RES CTR, PHILADELPHIA, PA USA