1 Medical Oncology Department, University Hospital, 30900 Nîmes, France; University of Montpellier, 34090 Montpellier, France; UMR INSERM IDESP-Desbrest Institute of Epidemiology and Public Health, University of Montpellier, 34090 Montpellier, France. Electronic address: frederic.fiteni@chu-nimes.fr.