1. Faculty of Health Sciences, University of Southampton, Southampton, United Kingdom.
2. Department of Medical Psychology, Radboud University Medical Center, Nijmegen, The Netherlands.
3. Faculty of Health and Sport Sciences, University of Agder, Kristiansand, Norway.
4. Department of Clinical Research, Sorlandet Hospital, Kristiansand, Norway.
5. Marie Curie Palliative Care Research Department and Division of Psychiatry, University College London, London, United Kingdom.
6. Department of Medical Education, Jagiellonian University Medical College, Krakow, Poland.
7. Oral Medicine Unit, Sheba Medical Center, Tel-Hashomer, Israel.
8. The Maurice and Gabriela Goldschleger School of Dental Medicine, Tel Aviv University, Tel Aviv, Israel.
9. Department of Psychological Medicine, Oxford University Hospital, Oxford, United Kingdom.