When and where to promote cardiopulmonary resuscitation? A pilot study of association between circumstances and bystander CPRdoi:10.1016/j.resuscitation.2012.08.087Chen, Wei-TingLiu, Shih-HungChen, Nai-ChuanYe, Huang-FuChin, Kuan-ChenChou, Eric Hao-Chang...