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4Published in Revista Panamericana de Salud Pública (2001)Get access
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7Published in Revista Panamericana de Salud Pública (1998)Get access
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8Published in Revista Panamericana de Salud Pública (2000)Get access
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9Published in Revista Panamericana de Salud PúblicaGet access
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10Published in Revista Panamericana de Salud PúblicaGet access
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16Published in Revista Panamericana de Salud PúblicaGet access
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17Published in Revista Panamericana de Salud Pública (1997)Get access
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20Published in Revista Panamericana de Salud PúblicaGet access
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