1. Montpellier Cancer Institute/Val d'Aurelle; Montpellier France
2. Department of pathology; CHU Nimes; Nimes France
3. Biostatistics, epidemiology and clinical research unit; IURC; Montpellier France
4. Onco LR; Montpellier France
5. Department of pathology; CHU Montpellier; Montpellier France