| Characteristic | Usage rate |
|---|---|
| - | - |
| - | - |
| - | - |
| - | - |
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Source
Release date
May 2019
Region
South Korea
Survey time period
October 25 to December 3, 2018
Number of respondents
671 respondents
Age group
19 years and older
Method of interview
Face-to-face interview
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