[1] Beth Israel Deaconess Med Ctr, Dept Pathol, Boston, MA 02215 USA
[2] Massachusetts Gen Hosp, Cutaneous Biol Res Ctr, Charlestown, MA USA
[3] Massachusetts Gen Hosp, Dept Dermatol, Charlestown, MA USA
[4] Harvard Univ, Sch Med, Charlestown, MA USA
[5] Biogen Inc, Cambridge, MA 02142 USA