[1] BETH ISRAEL DEACONESS MED CTR, DEPT MED, DIV HEMATOL ONCOL, CANC BIOL PROGRAM, BOSTON, MA 02215 USA
[2] BETH ISRAEL DEACONESS MED CTR, DIV SIGNAL TRANSDUCT, DEPT MED, BOSTON, MA 02215 USA
[3] BETH ISRAEL DEACONESS MED CTR, DEPT SURG, BOSTON, MA 02215 USA
[4] MAX PLANCK RES UNIT ENZYMOL PROT FOLDING, D-06120 HALLE, GERMANY
[5] HARVARD UNIV, SCH MED, DEPT CELL BIOL, BOSTON, MA 02115 USA
[6] UNIV TEXAS, MD ANDERSON CANC CTR, DEPT CLIN INVEST, HOUSTON, TX 77030 USA
[7] HARVARD UNIV, SCH MED, DIV AGING, BOSTON, MA 02215 USA