American Journal of Preventive Medicine
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American Journal of Preventive Medicine > 2013 > 45 > 1 > 75-82
American Journal of Preventive Medicine > 2013 > 45 > 1 > 29-35
American Journal of Preventive Medicine > 2013 > 45 > 1 > 36-48
American Journal of Preventive Medicine > 2013 > 45 > 1 > 98-107
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