Children (2) Estudio (2) Niños (2) nécessité (2) Labor (1) Minors (1) Employees (1) Trials (1) Revelation (1) Population (1) Physicists (1) Perspective (1) Occupations (1) Industrial accidents (1) Id (Psychology) (1) History (1) Health (1) Girls (1) Contingency tables (1) Child abuse (1) Character (1) Attention (1) Niños--Malos tratos (1) Riesgos laborales (1) Tablas de contingencia (1) Gestión (1) Salud (1) Físicos (1) Niñas (1) Atención (1)