Appendix 1: Links to Data Sources and Tools for Creating Health Catchment Area Geospatial Databases.

Source	Description	Link
Health Facility Lists
The Global Healthsites mapping project	Healthsites.io is building a baseline of health facility data with OpenStreetMap	https://healthsites.io/map https://data.humdata.org/organization/healthsites https://github.com/healthsites/healthsites/wiki/API
Common Geo-Registry (CGR)	Master and non-master list of health facilities obtained through government and commercial partnerships.	http://dsme.community/common-geo-registry/
HeRAMS	Ensures that core information on essential health resources and services is readily available to decision makers at country, regional and global levels.	https://www.who.int/initiatives/herams
Humanitarian Data Exchange (HDX)	Master list of health facilities developed government and non-government sources from 50 countries in sub-Saharan Africa	https://data.humdata.org/dataset/health-facilities-in-sub-saharan-africa
GRID3 Health Facility Cleaning		https://github.com/ciesin-geospatial/GRID3_ODP_HF
Boundary Data and Common Operational Datasets
Second Administrative Level Boundaries	This program aims to collect, compile, and manage a homogenous global repository on administrative boundaries and their names from authoritative sources such as the National Geospatial Information Authorities.	https://www.unsalb.org/
GRID3	Boundary data	https://data.humdata.org/organization/grid3
HDX	Database of countries with existing CODs published on OCHA	https://data.humdata.org/cod
geoBoundaries	An open, free, and research-ready database of political administrative boundaries.	https://www.geoboundaries.org/
Population Estimates
WorldPop	WorldPop provides an open access archive of spatial demographic datasets to support development, disaster response and health applications.	https://www.worldpop.org/
GRID3	Gridded population estimates	https://data.humdata.org/organization/grid3