Fig. 5From: Geographical inequality in service utilization for primary aldosteronism screening: spatial epidemiological study in Southern ThailandIncidence (per million population) of primary aldosteronism by province. (UTM, Universal transverse mercator zone; Km, Kilometer), UTM zone 47 N, Indian 1975, EPSG:32647. The map was generated by ggplot2 and other graphical packages in R software, using geographic data from DIVA-GIS (12)Back to article page