Costa Rica (3) Weights and measures (2) Population (2) Mortality (2) Human behavior (2) Diseases (2) Evidencia (2) Estudio (2) Información (2) Pesos y medidas (2) Población (2) Conducta (2) Mortalidad (2) Enfermedades (2) Viruses (1) Tumors (1) Therapeutics (1) Statistics (1) Single people (1) Sex (Biology) (1) Reason (1) Pathology (1) Methodology (1) Men (1) Materials (1) Infection (1) Health (1) Happiness (1) Fees, Administrative (1) Epidemiology (1)