[1] Saint-Etienne University Hospital,Department of Public Health
[2] Cancer Institute of Loire,Clinical Epidemiology Unit
[3] Laval University Cancer Research Center,Department of Radio
[4] Quebec University Hospital,oncology
[5] Montreal University Hospital,Department of Radio
[6] Sherbrooke University Hospital,oncology
[7] Sagamie Hospital,Department of Radio
[8] Quebec University Hospital,oncology
[9] Laval University,Department of Radio