1
Subjects: ...Epidemiology Research Methodology....
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2
Subjects: ...Public health Research....
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4
Subjects: ...Epidemiology Research Methodology....
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5
Published 2007
Subjects: ...Public health Research....
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6
Subjects: ...Public health Research....
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7
Subjects: ...Public health Research....
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8
by Gómez Arango, Silvio.
Published 1998
Subjects: ...Medical. Research....
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9
by Arreola Nava, María Eugenia.
Published 2000
Subjects: ...Medical. Research....
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10
Subjects: ...Medical. Research....
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13
by Soler Morejón, Caridad.
Published 2012
Subjects: ...Medical. Research....
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14
Subjects: ...Public health Research....
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15
by Muntaner, C., Gómez, M. B,
Published 2003
Subjects: ...Research....
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16
by Popay, J.
Published 2003
Subjects: ...Research....
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