The identifier 2020.oak/2428/2/치과 내원 흡연자의 전자담배 사용 및 사용의도 관련요인.pdf does not correspond to a valid Bitstream in Repository. This may be because of one of the following reasons:
The URL of the current page is incorrect - if you followed a link from outside of Repository it may be mistyped or corrupt.
You entered an invalid ID into a form - please try again.
If you're having problems, or you expected the ID to work, feel free to contact the site administrators.