1. Dallas Diabetes Research Center at Medical City, Dallas, Texas
2. Hillcrest Family Health Center, Waco, Texas
3. Department of Medicine III, Carl Gustav Carus University Hospital, Technische Universität Dresden, Dresden, Germany
4. Paul Langerhans Institute Dresden, Helmholtz Center Munich at Technische Universität Dresden, Dresden, Germany
5. Novo Nordisk A/S, Søborg, Denmark
6. Endocrinology, Diabetology and Nutrition, Clinique Portes du Sud, Venissieux, France
7. Departamento Endocrinología, Instituto Mexicano del Seguro Social, Ciudad Madero, Mexico
8. Department of Metabolism and Endocrinology, Juntendo University Graduate School of Medicine, Tokyo, Japan
9. Diabetes Research Centre, University of Leicester, Leicester, England