1. Division of Endocrinology, Diabetes, and Clinical Nutrition, Department of Internal Medicine, University of Basel Hospital, Basel, Switzerland
2. Department of Clinical Research, University of Basel Hospital, Basel, Switzerland
3. Department of Laboratory Medicine, Kantonsspital Aarau, Aarau, Switzerland
4. Division of Endocrinology, Diabetes, and Metabolism, University Department of Medicine, Kantonsspital Aarau, Aarau, Switzerland