[1] Univ Dundee, Mol & Clin Med, Dundee, Scotland
[2] CNR, Inst Neurosci, Padua, Italy
[3] Univ Exeter, NIHR Exeter Clin Res Facil, Exeter, Devon, England
[4] Royal Devon & Exeter Hosp, Exeter, Devon, England
[5] Univ Oxford, Wellcome Trust Ctr Human Genet, Mol & Clin Med, Oxford, England
[6] Univ Oxford, Wellcome Trust Ctr Human Genet, Oxford, England
[7] Newcastle Univ, Inst Cellular Med, Newcastle Upon Tyne, Tyne & Wear, England
[8] NIHR Oxford Biomed Res Ctr, Oxford Ctr Diabet Endocrinol & Metab, Oxford, England
[9] Sanofi Aventis Deutsch GmbH, TMED, Frankfurt, Germany
[10] Eli Lilly Res Labs, Indianapolis, IN USA