The increasing median pre-hospital time in recent population-based registry studies.
NRMI-2, National Registry of Myocardial Infarction 2, 1999;
WHAS, Worcester Heart Attack Study, 2000; GRACE, Global Registry of Acute Coronary Events, 2002; GREECS, study of Pitsavos et al., Greece, 2006; MITRAplus, Maximal Individual Therapy in Acute Myocardial Infarction plus, 2006.