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Adolescent behavior
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Arctic medicine. Tropical medicine
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Conducta del adolescente
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Mexico
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México
Public aspects of medicine
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RA1-1270
RC955-962
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adolescent health
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conducta de reducción del riesgo
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conducta sexual
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ensayo clínico controlado aleatorio
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estudios de intervención
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follow-up studies
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intervention studies
randomized controlled trial
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risk reduction behavior
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salud del adolescente
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sexual behavior
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