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P15-16. Social factors affecting retention rates in Step study participants in Lima-Peru
| Autores principales: | , , , |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
BioMed Central
2009
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2767712/ http://dx.doi.org/10.1186/1742-4690-6-S3-P217 |