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What Users Think about the Differences between Caffeine and Illicit/Prescription Stimulants for Cognitive Enhancement
- Andreas G. Franke,
- Klaus Lieb,
- Elisabeth Hildt
![PLOS](/resource/img/logo-plos.png)
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- Published: June 29, 2012
- https://doi.org/10.1371/journal.pone.0040047