title: Sudden onset of chest pain associated with PR-segment depression in ECG.
authors.affiliation: Department of Emergency Cardiology and Acute Internal Diseases, "Pirogov" Emergency Hospital, Sofia, Bulgaria.
authors.forename: Daniel Bogdanov
authors.initials: DB
authors.lastname: Petrov
mesh_terms: D000208:Acute Disease; D002637:Chest Pain / Q000175:diagnosis* / Q000451:nursing; D004562:Electrocardiography; D006801:Humans; D008297:Male; D008875:Middle Aged; D010496:Pericardium / Q000473:pathology*; D011379:Prognosis; D013997:Time Factors