Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12889-021-10512-6/MediaObjects/12889_2021_10512_Fig4_HTML.png)
Annual income difference (in euros) between HC users and non-users across 309 Finnish municipalities. (map created with R software version 3.5.1, URL http://www.rstudio.com/)
Annual income difference (in euros) between HC users and non-users across 309 Finnish municipalities. (map created with R software version 3.5.1, URL http://www.rstudio.com/)