1. Assessing the diagnostic value of an ECG containing leads V4R, V8, and V9: The 15-lead ECG;Zalenski;Ann Emerg Med,1993
2. The 15-lead ECG in emergency department chest pain patients: Comparison to the 12-lead ECG;Brady;Acad Emerg Med,1997
3. Emergency department diagnosis of acute posterior-wall myocardial infarction using left posterior chest leads;Pollack;Acad Emerg Med,1997
4. Usefulness of three additional electrocardiographic chest leads (V7, V8, and V9) in the diagnosis of acute myocardial infarction;Melendez;Can Med Assoc J,1978
5. Myocardial Infarction: Electrocardiographic Differential Diagnosis;Goldberger,1991