[1] Taichung Vet Gen Hosp, Dept Internal Med, Taichung, Taiwan
[2] Univ Pisa, Dept Endocrinol & Metab, Sect Metab Dis, Pisa, Italy
[3] Novartis Pharmaceut, E Hanover, NJ USA
[4] Novartis Pharma AG, Basel, Switzerland
[5] Univ Leipzig, Dept Med, D-04109 Leipzig, Germany
[6] Univ Oxford, Oxford Ctr Diabet Endocrinol & Metab, Oxford, England