Pérou (2) Pregnancy (2) Materials (2) Health (2) Salud (2) Estudio (2) Embarazo (2) Materiales (2) grossesse (2) Minors (1) Women (1) Strategy (1) Sampling (1) Reformation (1) Poverty (1) Population (1) Mothers (1) Mortality (1) Months (1) Medical records (1) Light (1) Life (1) Labor (Obstetrics) (1) Integrals (1) Premature infants (1) Newborn infants (1) Hospitals (1) Fountains (1) Fever (1) Evaluation (1)