%0 Journal Article %T A 5-year change of knowledge and willingness by sampled respondents to perform bystander cardiopulmonary resuscitation in a metropolitan city %A Dong Eun Lee %A Hyun Wook Ryoo %A Jae Yun Ahn %A Jung Bae Park %A Jung Ho Kim %A Kyung Woo Lee %A Sang-chan Jin %A Sungbae Moon %J Archive of "PLoS ONE". %D 2019 %R 10.1371/journal.pone.0211804 %U https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6366762/