Essay (2) Ensayo (2) essai (2) Chili (1) Cell phone systems (1) Primary health care (1) Trials (1) Teaching--Aids and devices (1) Social sciences (1) Science (1) Sampling (1) Public health (1) Population (1) Politicians (1) Physics (1) Old age (1) Obesity (1) Measurement (1) Marginalia (1) Evaluation (1) Diet (1) Community health services (1) Circle (1) Cholesterol (1) Cerebral palsy (1) Attention (1) Attachment and garnishment (1) Aging (1) Adulthood (1) Text messages (Cell phone systems) (1)