1. Centre Hospitalier Universitaire Vaudois (CHUV), Palliative Care Service, Department of Medicine, Lausanne, Vaud, Switzerland.
2. School of Health Sciences, HECVSanté, Health Research Unit, Lausanne, Vaud, Switzerland.
3. Institute of Social Sciences, University of Lausanne, Vaud, Switzerland.
4. Division of Palliative Care, University of Ottawa, Canada.