1. Bartholin Instituttet, Kommunehospitalet, Copenhagen, Denmark
2. Laboratory of Islet Cell Physiology, Novo Nordisk, Bagsværd, Denmark
3. Department of Endocrinology, Hvidovre Hospital, Hvidovre, Denmark
4. Department of Clinical Neuroscience, Section of Neurochemistry, University of Göteborg, Mölndals Hospital, Mölndal, Sweden