Danielle van Reijn-Baggen

1 General introduction 37 112. Arroyo A, Perez F, Serrano P, Candela F, Lacueva J, Calpena R. Surgical versus chemical (botulinum toxin) sphincterotomy for chronic anal fissure: long-term results of a prospective randomized clinical and manometric study. Am J Surg. Apr 2005;189(4):42934. doi:10.1016/j.amjsurg.2004.06.045. 113. Garg P, Garg M, Menon GR. Long-term continence disturbance after lateral internal sphincterotomy for chronic anal fissure: a systematic review and meta-analysis. Colorectal Dis. Mar 2013;15(3):e104-17. doi:10.1111/codi.12108. 114. Valizadeh N, Jalaly NY, Hassanzadeh M, et al. Botulinum toxin injection versus lateral internal sphincterotomy for the treatment of chronic anal fissure: randomized prospective controlled trial. Langenbecks Arch Surg. Oct 2012;397(7):1093-8. doi:10.1007/s00423012-0948-2.

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