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We also introduce in the regressions variables related to education infrastructure, as well as the average number of hours a week that the public hospitals or health centers provide growth and development check-ups, and the average travel time to a health care centre in the municipality computed using our sample. Other municipality variables less directly related to policy are population size, QLI, municipality surface, percentage of urban population in the municipality, whether or not the municipality has a bank, and altitude from the sea level. Given the serious violence problems that take place in Colombia, we also. | Preventing Lead Young II Children A STATEMENT BY THE Centers for Disease Control and Prevention August 2005 U.S. DEPARTMENT OF HEALTH AND HUMAN SERVICES Centers for Disease Control and Prevention Preventing Lead Poisoning in Young Children A Statement by the Centers for Disease Control and Prevention August 2005 Centers for Disease Control and Prevention Julie L. Gerberding MD MPH Director National Center for Environmental Health Tom Sinks PhD Acting Director Division of Emergency and Environmental Health Services Jim Rabb Acting Director Lead Poisoning Prevention Branch Mary Jean Brown ScD RN Chief U.S. Department of Health and Human Services Public Health Service Suggested reference Centers for Disease Control and Prevention. Preventing Lead Poisoning in Young Children. Atlanta CDC .