[1] Massachusetts Gen Hosp, Diabet Unit, Cambridge, MA USA
[2] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[3] DIBIT San Raffaele Sci Inst, Milan, Italy
[4] Childrens Hosp, Boston, MA 02115 USA
[5] Dana Farber Canc Inst, Boston, MA 02115 USA
[6] Univ Wisconsin, Madison, WI USA
[7] Univ Vermont, Burlington, VT USA
[8] Harvard Univ, Sch Med, Boston, MA USA