Fig. 4From: Geographical inequality in service utilization for primary aldosteronism screening: spatial epidemiological study in Southern ThailandNumbers of patients who were diagnosed with primary aldosteronism by provinces. (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