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1by María Teresa Restrepo Calle, Alcira Monroy de Peña, Jaime Pérez Giraldo, María Cristina Velásquez EcheverriGet access
Published in Revista Panamericana de Salud Pública (2003)
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4by Claudia Lucía Colorado, Guillermo Sánchez, Martha Inírida Guerrero, Clara Inés LeónGet access
Published in Biomédica (2011)
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Article in Journal/Newspaper