Yan AT, Yan RT, Kennelly BM, Anderson FA, Budaj A, L?pez-Send?n J, Brieger D, Allegrone J, Steg G, Goodman SG. Relationship of ST elevation in lead aVR with angiographic findings and outcome in non-ST elevation acute coronary syndromes. Am Heart J. 2007 Jul; 154(1):71-8.