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The link is: http://www.researchgate.net/profile/lauren_weiss4/publication/273353412_apostake_the_stairs_instead_of_the_escalatorapos_effect_of_environmental_prompts_on_community_stair_use_and_implications_for_a_national_apossmall_stepsapos_campaign/links/5501c8a30cf231de076bc1de.pdf
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