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Mean effects on sitting blood pressure (BP) of glyceryl trinitrate (GTN) with sildenafil and with placebo in angina patients. Baseline values are those taken before sildenafil or placebo administration. For each time point, baseline values are followed by values measured every 3 min after GTN (pre-GTN values are not shown). Sildenafil (—♦—); Placebo (
)
