All data used are publicly available. Demographic data are available via IPUMS National Historic Geographic Information Systems [<a href="http://www.nhgis.org/" target="_blank">www.nhgis.org</a>]; air pollution estimates are available via the EPA CACES project [<a href="http://www.caces.us/" target="_blank">www.caces.us</a>]).
All data used are publicly available. Demographic data are available via IPUMS National Historic Geographic Information Systems [<a href="http://www.nhgis.org/" target="_blank">www.nhgis.org</a>]; air pollution estimates are available via the EPA CACES project [<a href="http://www.caces.us/" target="_blank">www.caces.us</a>]).
All data used are publicly available. Demographic data are available via IPUMS National Historic Geographic Information Systems [<a href="http://www.nhgis.org/" target="_blank">www.nhgis.org</a>]; air pollution estimates are available via the EPA CACES project [<a href="http://www.caces.us/" target="_blank">www.caces.us</a>]).
All data used are publicly available. Demographic data are available via IPUMS National Historic Geographic Information Systems [<a href="http://www.nhgis.org/" target="_blank">www.nhgis.org</a>]; air pollution estimates are available via the EPA CACES project [<a href="http://www.caces.us/" target="_blank">www.caces.us</a>]).
All data used are publicly available. Demographic data are available via IPUMS National Historic Geographic Information Systems [<a href="http://www.nhgis.org/" target="_blank">www.nhgis.org</a>]; air pollution estimates are available via the EPA CACES project [<a href="http://www.caces.us/" target="_blank">www.caces.us</a>]).
Market area maps and statistics developed using geographic information systems will help communicate the unmet need for HCTs, inform policy, and assist transplantation centers in planning for the anticipated growth in HCT use.