Herlitz, J.; Bång, A.; Isaksson, L.; Karlsson, T. (1995). „Outcome for patients who call for an ambulance for chest pain in relation to the dispatcher's initial suspicion of acute myocardial infarction”. European Journal of Emergency Medicine. 2 (2): 75—82. PMID9422186. doi:10.1097/00063110-199506000-00004..
Herlitz, J.; Bång, A.; Isaksson, L.; Karlsson, T. (1995). „Outcome for patients who call for an ambulance for chest pain in relation to the dispatcher's initial suspicion of acute myocardial infarction”. European Journal of Emergency Medicine. 2 (2): 75—82. PMID9422186. doi:10.1097/00063110-199506000-00004..