modèle (1) âge (1) Brésil (1) Children (1) Surveys (1) Vitamin A deficiency (1) Vitamin A (1) Surveys (1) Serum (1) Respect (1) Persons (1) Maternal age (1) Manufacturers' agents (1) Human beings (1) Hemoglobin (1) Families--Health and hygiene (1) Example (1) Diarrhea (1) Days (1) Commission merchants (1) Children (1) Anemia (1) Age (1) Age (1) Number (1)