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. 2015 Dec 1;15:263. doi: 10.1186/s12862-015-0543-6

Fig. 3.

Fig. 3

Map showing the frequency distributions of predicted NAT2 phenotypes in African populations screened for sequence variation in the coding-exon (pie charts are proportional to sample size). Map created with the QGis open source software [98], with climatic zones defined according to [99]