1. Geographic Accessibility of Pulmonologists for Adults With COPD
Janet B. Croft, PhD, Hua Lu, MS, Xingyou Zhang, PhD, James B. Holt, PhD 
CHEST 
Volume 150, Issue 3, Pages (September 2016)
DOI: /j.chest
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2. Figure 1
Locations of 12,392 US pulmonologists and quintiles of county estimates of the 15.7 million adults ≥ 18 years of age with diagnosed COPD: United States, 2013.
CHEST  , DOI: ( /j.chest )
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3. Figure 2
Locations of 248,160 US primary care physicians and quintiles of county estimates of the 15.7 million adults ≥ 18 years of age with diagnosed COPD: United States, 2013.
CHEST  , DOI: ( /j.chest )
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4. Figure 3
County-level ratio of adults ≥ 18 years of age with COPD per pulmonologist within 50 miles: United States, 2013.
CHEST  , DOI: ( /j.chest )
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