1. Department of Neurology (M.K.), University Hospital Basel, CH-4031 Basel, Switzerland
2. Departments of Endocrinology, Diabetology and Clinical Nutrition (M.C.-C., M.K., J.R., B.M.), University Hospital Basel, CH-4031 Basel, Switzerland
3. Research Department (N.G.M.), B.R.A.H.M.S. AG, Biotechnology Centre, Hennigsdorf-Berlin, D-16761 Hennigsdorf, Germany
4. Department of Endocrinology (K.C.S.D., G.E.B.), Christie Hospital, Manchester M20 4BX, United Kingdom