[1] Univ Washington, Dept Med, Seattle, WA 98109 USA
[2] Univ Washington, Dept Dermatol & Pathol, Seattle, WA 98109 USA
[3] Dana Farber Canc Inst, Dept Med Oncol, Boston, MA 02115 USA
[4] Brigham & Womens Hosp, Dept Med, Boston, MA 02115 USA
[5] Harvard Univ, Boston, MA 02115 USA
[6] Fred Hutchinson Canc Res Ctr, Div Clin Res, Seattle, WA 98109 USA