1. Oral Medicine, Oral Pathology & Clinical Oral Physiology; University of Copenhagen; Copenhagen Denmark
2. Oral Biochemistry, Cariology & Endodontics; Department of Odontology, Faculty of Health and Medical Sciences; University of Copenhagen; Copenhagen Denmark
3. Mucosal & Salivary Biology Division; King's College London Dental Institute; London UK
4. Department of Pharmacology; Institute of Neuroscience and Physiology; The Sahlgrenska Academy at University of Gothenburg; Gothenburg Sweden