An exhaustive census will be administered to the population of the study area (both arms) at baseline. The census will assign a unique identification number to each person surveyed. At each household, a screening will take place to identify women eligible for inclusion. Eligible women identified in the study area will be asked to give written informed consent for their inclusion in the study (or their legal guardians in the case of unemancipated minors). The baseline survey will be administered after consent is obtained. Using the unique census ID number, the same participants will be identified and surveyed again at 12, 24 and 36 months.