1. Laboratory Epsylon EA 4556; University of Montpellier 1 and 3; Montpellier France
2. University Department of Adult Psychiatry; La Colombière Hospital; Montpellier France
3. Pain and Palliative Care Group, School of Health Sciences; Universidad Pontificia Bolivariana; Medellín Colombia
4. INSERM UMR 1027; Paul Sabatier University; Toulouse France
5. Institut Régional du Cancer; Montpellier France