%0 Journal Article %J Internal medicine journal %D 2011 %T Utilisation of emergency medical service among Singapore patients presenting with ST-segment elevation myocardial infarction: prevalence and impact on ischaemic time %A Tan, L-L %A Wong, H-B %A Poh, C-L %A Chan, MY %A Seow, S-C %A Yeo, T-C %A Teo, S-G %A Ooi, SBS %A Tan, H-C %A Lee, C-H %B Internal medicine journal %I Blackwell Publishing Asia Melbourne, Australia %V 41 %P 809–814 %G eng