1. Department of Behavioural and Community Dentistry, Institute of Odontology, The Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
2. Institute of Medicine, The Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
3. Department of Cariology, Institute of Odontology, The Sahlgrenska Academy University of Gothenburg Gothenburg Sweden
4. Department of Gastroenterology and Hepatology, Unit of Clinical Nutrition and The Regional Obesity Center Sahlgrenska University Hospital Gothenburg Sweden
5. Department of Gastrosurgical Research and Education, Sahlgrenska Academy University of Gothenburg Gothenburg Sweden