Colombie (1) Streets (1) Sanitation workers (1) Refuse collectors (1) Population (1) Parents (1) Otitis media (1) Materials (1) Hearing disorders in children (1) Hearing disorders (1) Health (1) Examinations (1) Evoked potentials (Electrophysiology) (1) Evaluation (1) Eustachian tube (1) Deafness (1) Combustion gases (1) Children (1) Logistic regression analysis (1) Audición--Trastornos en niños (1) Audición--Trastornos (1) Análisis de regresión logística (1) Gases de combustión (1) Factores (1) Evaluación (1) Salud (1) Sordera (1) Potenciales evocados (1) Estudio (1) Padres (1)