[1] HARVARD UNIV, BRIGHAM & WOMENS HOSP,SCH MED, DEPT RHEUMATOL & IMMUNOL,LYMPHOCYTE BIOL SECT, BOSTON, MA 02115 USA
[2] HARVARD UNIV, BRIGHAM & WOMENS HOSP,SCH MED,JOSLIN DIABET CTR, DEPT MED,DIV RES, BOSTON, MA 02115 USA
[3] OREGON HLTH SCI UNIV, DIV HEMATOL & MED ONCOL, PORTLAND, OR 97201 USA