door
participants
works
process
And I have no friends
https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART003035278
https://drive.google.com/file/d/1_1vfHkeRsUwVRYCG_YNfWxZYWsc3mRN5/view?usp=drive_link