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1by Osvaldo Artaza Barrios, Julio Montt Vidal, Claudia Vásquez LeichtleGet access
Published in Revista Panamericana de Salud Pública (1997)
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2by Osvaldo Artaza Barrios, Claudio A. MéndezGet access
Published in Revista Panamericana de Salud Pública (2020)
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Article in Journal/Newspaper