enquête (1) échantillonnage (1) inventaire (environnement) (1) analyse (1) instrument de mesure (1) Reliability (1) Variation (1) Methods (1) Satisfaction (1) Sampling (1) Reliability (1) Public health (1) Probabilities (1) Physicians (1) Must (1) Medical care (1) Materials (1) Manufacturers' agents (1) Evidence (1) Errors (1) Dates (Fruit) (1) Commission merchants (1) Addition (1) Confirmatory factor analysis (1) Methods (1) Peruvian regions (1) Validity (1) Materials (1) Analysis (1) Structure (1)