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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: Neurotoxicol Teratol. 2011 Jan–Feb;33(1):176–184. doi: 10.1016/j.ntt.2010.10.004

Fig. 1.

Fig. 1

Flow chart of cohort (n=412) with follow up 1 to 3 years (yr). Number of subjects included in heavy use analysis in parentheses.

aN =350 included in analyses of heavy MA use; 6 cases identified as exposed by toxicology only.

bN =345 included in analyses of heavy MA use; 5 cases identified as exposed by toxicology only.