tendance (1) risque (1) association (1) analyse (1) épidémiologie (1) effet (1) risque de cancer (1) cancer (1) Epidemiology (1) Food (1) Cancer (1) Methods (1) Cases (1) Vitamin E (1) Ci (Chinese poetry) (1) Social groups (1) Risk (1) Neck (1) Larynx (1) Head (1) Food (1) Evidence (1) Epidemiology (1) Discrimination (1) Confidence intervals (1) Cancer (1) Cases (1) Case-control method (1) Methods (1) Sources (1)