Randomized, prospective, double-blind, placebo-controlled trial of effect of nitroglycerin ointment on pain after hemorrhoidectomy
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A comparison of injections of botulinum toxin and topical nitroglycerin ointment for the treatment of chronic anal fissure
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Double-blind randomized controlled trial of effect of metronidazole on pain after day-case haemorrhoidectomy
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Glyceryl trinitrate for chronic anal fissure-healing or headache: Results of a multicenter, randomized, placebo-controlled, double-blind trial
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Pathophysiological aspects and clinical outcome of intra-anal application of isosorbide dinitrate in patients with chronic anal fissure
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Randomized clinical trial assessing the side-effects of glyceryl trinitrate and diltiazem hydrochloride in the treatment of chronic anal fissure
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