Economic conditions (1) Nutrition (1) Mortality (1) Development (1) Employment (1) Causes (1) Children (1) Prevention (1) Diseases (1) Death and burial (1) Death (1) Identification (1) Abnormalities (1) Warranty of title (1) Doppler ultrasonography (1) Worms (1) Umbilical cord (1) Traffic flow (1) Tobacco (1) Synthetic drugs (1) Superoxide dismutase (1) Smooth muscle (1) Risk (1) Relaxation (1) Quality of life (1) Proteins (1) Multiple pregnancy (1) Pregnancy (1) Placenta (1) Oxygen (1)