12-lead electrocardiogram: R in lead I and S in lead III were greater than 26mm
12-lead electrocardiogram: r in lead i and s in lead iii were greater than 26mm
12-lead electrocardiogram: R in lead I and S in lead III were greater than 26mm (procedure)
12-lead electrocardiogram: r in lead i and s in lead iii were greater than 26mm (procedure)