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Khat Use Is Associated with Impaired Working Memory and Cognitive Flexibility
Colzato LS,
Ruiz MJ,
van den Wildenberg WPM,
Hommel B
(2011)
Khat Use Is Associated with Impaired Working Memory and Cognitive Flexibility.
PLOS ONE 6(6): e20602.
https://doi.org/10.1371/journal.pone.0020602