enquête (4) oncologie (4) décision (4) cancer (4) Surgery (4) Cancer (4) Surgery (4) Surgeons (4) Physicians (4) Patients (4) Oncology (4) Oncologists (4) Neck (4) Manufacturers' agents (4) Impact (4) Head (4) Commission merchants (4) Cancer (4) Practice (4) Patients (4) Health (4) Surgeons (4) Salud (4) Santé (4) Publics (4) Santé (4) santé (4) carré (3) Intercession (3) Economic conditions (3)