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Resolution: standard / high Figure 1.
Geographical location of sampling sites in Alaska in 2006 and 2007. Hunter-harvest sampling locations are noted in red. Live bird surveillance sampling locations are marked in green. Habitat classifications based on Bird Conservation Regions [36,37].
Ip et al. Virology Journal 2008 5:71 doi:10.1186/1743-422X-5-71 |