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. Author manuscript; available in PMC: 2016 Apr 1.
Published in final edited form as: Epidemiology. 2016 Mar;27(2):163–172. doi: 10.1097/EDE.0000000000000387

Figure 2.

Figure 2

The Marcellus shale extent, the location of spudded and producing wells as of December 2012, the location of the two Geisinger Health System hospitals and the primary and surrounding Geisinger counties. Annotation indicates the number of neonates born to mothers residing in each county. GMC = Geisinger Medical Center. GWV = Geisinger Wyoming Valley.