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1by Gustavo Adolfo Ávila Montes, Mercedes Martínez, Catalina Sherman, Eduardo Fernández CernaGet access
Published 2004
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2by Gustavo Ávila Montes, Mercedes Martínez Hernández, Carlos Ponce, Elisa Ponce, Ramón Soto HernándezGet access
Published in Revista Panamericana de Salud Pública (1998)
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3by Gustavo Adolfo Ávila Montes, Carlos Ponce, Elisa Ponce, Mercedes Martínez Hernández, Mario FloresGet access
Published 1999
Article in Journal/Newspaper