Recommended guidelines for reporting on emergency medical dispatch when conducting research in emergency medicine: the Utstein style

M Castrén, R Karlsten, F Lippert, E F Christensen, E Bovim, A M Kvam, I Robertson-Steel, J Overton, T Kraft, L Engerstrom, L Garcia-Castrill Riego, Emergency Medical Dispatch expert group at the Utstein Consensus Symposium 2005