1. Department of Internal Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
2. Department of Neuropsychiatry, Skaraborg Hospital, Falköping, Sweden
3. School of Medicine and Public Health, Faculty of Health and Medicine, University of Newcastle, NSW, Australia
4. Institute of Neuroscience and Physiology, Department of Psychiatry and Neurochemistry, The Sahlgrenska Academy at University of Gothenburg, Mölndal, Sweden
5. UCL Institute of Neurology, Queen Square, London, UK
6. Department of Endocrinology, Skaraborg Hospital, Skövde, Sweden