This article was initially published in the Epidemiology and Health 2016;38:e2016010, with an error in Figure 1C that duplicated Figure 1E.
The authors would like to correct Figure 1C as below.

This article was initially published in the Epidemiology and Health 2016;38:e2016010, with an error in Figure 1C that duplicated Figure 1E.
The authors would like to correct Figure 1C as below.
