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1by Kevin Escandón-Vargas, Andrés Zorrilla-Vaca, Raúl Heli Corral-PradoGet access
Published in Biomédica (2016)
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2by María del Pilar Crespo, Raúl Heli Corral, Alberto Alzate, Gabriel Carrasquilla, Nory SánchezGet access
Published in Revista Panamericana de Salud Pública (1999)
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Article in Journal/Newspaper