1. Department of General Internal Medicine; Inselspital, Bern University Hospital; University of Bern; Bern Switzerland
2. Departments of Medicine and Epidemiology & Biostatistics; University of California; San Francisco CA USA
3. Institute of Primary Health Care (BIHAM); University of Bern; Bern Switzerland
4. Department of Diabetes, Endocrinology, Clinical Nutrition and Metabolism; Inselspital, Bern University Hospital; University of Bern; Bern Switzerland
5. Intramural Research Program; National Institute on Aging; Baltimore MD USA
6. Departments of Psychiatry, and Neurology; University of California; San Francisco CA USA
7. Department of Epidemiology and Biostatistics; University of California; San Francisco CA USA