[1] Massachusetts Gen Hosp, Diabet Ctr, Boston, MA 02114 USA
[2] Harvard Univ, Sch Med, Boston, MA USA
[3] Univ N Carolina, Sch Med, Chapel Hill, NC USA
[4] Charles R Drew Univ, Clin Trials Unit, Los Angeles, CA USA
[5] Vrije Univ Amsterdam, Ctr Med, Diabet Ctr, Amsterdam, Netherlands
[6] Univ Oxford, Oxford Ctr Diabet Endocrinol & Metab, Diabet Trials Unit, Oxford, England
[7] Yale Univ, Sch Med, Dept Internal Med & Endocrinol, New Haven, CT USA
[8] Univ Toronto, Mt Sinai Hosp, Dept Endocrinol & Metab, Toronto, ON, Canada