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- [24] Is botulinum toxin injection a better treatment than nitroglycerin ointment for patients with chronic anal fissure? NATURE CLINICAL PRACTICE GASTROENTEROLOGY & HEPATOLOGY, 2007, 4 (11): : 598 - 599
- [25] Is botulinum toxin injection a better treatment than nitroglycerin ointment for patients with chronic anal fissure? Nature Clinical Practice Gastroenterology & Hepatology, 2007, 4 : 598 - 599