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Validation of self-reported khat chewing amongst khat chewers: An exploratory study
Saba Kassim, Aamenah Hawash, Atholl Johnston, Ray CroucherVolume:
140
Year:
2012
Language:
english
DOI:
10.1016/j.jep.2011.12.040
File:
PDF, 293 KB
english, 2012