1. University Centre for Palliative Care, Inselspital, Bern University Hospital, Bern, Switzerland.
2. Grupo de Investigación Atlantes, Instituto Cultura y Sociedad, Universidad de Navarra, Pamplona, Spain.
3. Service de Soins Palliatifs, Centre Hospitalier Universitaire Vaudois, Université de Lausanne, Lausanne, Switzerland.