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. 2020 Jun 10;138:556–557. doi: 10.1016/j.wneu.2020.03.181

Figure 1.

Figure 1

Radial boundaries represent a distance of 96.56 kilometers (60 miles) from a pediatric neurosurgeon. Neurosurgeons are designated by the American Board of Pediatric Neurological Surgery or as Joint Pediatric Section members, overlaying a population density map of persons 0–24 years of age per square mile. White spaces inland are areas without defined ZIP Code Tabulation Areas because of a minimal population. ABPNS, American Board of Pediatric Neurological Surgery; JPS, Joint Pediatric Section. (This image is used with permission from the Ahmed A.K., Duhaime A.C., Smith T.R. Geographic proximity to specialized pediatric neurosurgical care in the contiguous United States. J Neurosurg Pediatr. 2018;21:434–438).