[1] Hosp Univ Bellvitge IDIBELL, Barcelona, Spain
[2] Univ Vermont, Coll Med, Burlington, VT 05405 USA
[3] Diabet Zentrum Bad Lauterberg, Bad Lauterberg im Harz, Germany
[4] AMCR Inst, Escondido, CA USA
[5] Baylor Coll Med, Houston, TX 77030 USA
[6] Univ Roma La Sapienza, Rome, Italy
[7] Novo Nordisk AS, Copenhagen, Denmark
[8] Univ Leicester, Leicester LE1 7RH, Leics, England