1. Biometrics Unit, Institut du Cancer Montpellier (ICM); Montpellier France
2. Université de Montpellier; Montpellier France
3. Institut Montpelliérain Alexander Grothendieck (IMAG); Montpellier France
4. Institute of Statistics, Biostatistics and Actuarial sciences; Université catholique de Louvain; Belgium
5. Department of Radiation Oncology, Institut du Cancer Montpellier (ICM); Montpellier France
6. Institut de Recherche en Cancérologie de Montpellier (IRCM), Inserm U1194; Montpellier France
7. French National Platform Quality of Life and Cancer; Montpellier France
8. Université Paul-Valéry Montpellier 3; Montpellier France