Isosorbide-5-Mononitrate and Atenolol in the Treatment of Stable Exertional Angina

Fourteen men and six women, 48–68 years old, with stable angina and effort-induced ST-segment depression (ST-D) were treated with isosorbide-5-mononitrate (IS-5-MN) 2 × 40 mg/day and/or atenolol (AT)