Health (3) Salud (3) Trust (2) Population (2) Drugs (2) Confidence (2) Confianza (2) Estudio (2) Población (2) Medicamentos (2) Primary health care (1) Women (1) Utility theory (1) Statistics (1) Sampling (1) Research (1) Public health personnel (1) Indigenous peoples (1) Medicine (1) Medical personnel (1) Interest (1) Health facilities (1) Generals (1) Collective settlements (1) Chontal language (1) Chol language (1) Children (1) Calculus (1) Attention (1) Toma de muestras (1)