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Arctic medicine. Tropical medicine
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Brasil
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Brazil
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Medicine
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Public aspects of medicine
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R
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RA1-1270
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RC955-962
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Sacarosa
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Sucrose
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caries dental
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child
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concentración de iones hidrógeno
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dental caries
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erosión de los dientes
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hydrogen-ion concentration
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niño
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preescolar
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preschool
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tooth erosion
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