Collins, E. E.; Lund, J. N. (September 2007). “A Review of Chronic Anal Fissure Management”. 《Techniques in Coloproctology》 11 (3): 209–223. doi:10.1007/s10151-007-0355-9. PMID17676270.
Nelson RL, Thomas K, Morgan J, Jones A (2012). “Non surgical therapy for anal fissure”. 《Cochrane Database of Systematic Reviews》 2: CD003431. doi:10.1002/14651858.CD003431.pub3. PMID22336789.
Shao, WJ; Li, GC; Zhang, ZK (September 2009). “Systematic review and meta-analysis of randomized controlled trials comparing botulinum toxin injection with lateral internal sphincterotomy for chronic anal fissure”. 《International journal of colorectal disease》 24 (9): 995–1000. doi:10.1007/s00384-009-0683-5. PMID19266207.
Collins, E. E.; Lund, J. N. (September 2007). “A Review of Chronic Anal Fissure Management”. 《Techniques in Coloproctology》 11 (3): 209–223. doi:10.1007/s10151-007-0355-9. PMID17676270.
Nelson RL, Thomas K, Morgan J, Jones A (2012). “Non surgical therapy for anal fissure”. 《Cochrane Database of Systematic Reviews》 2: CD003431. doi:10.1002/14651858.CD003431.pub3. PMID22336789.
Haq., Z.; Rahman, M.; Chowdhury, R.; Baten, M.; Khatun, M. (2005). “Chemical Sphincterotomy—First Line of Treatment for Chronic Anal Fissure”. 《Mymensingh Medical Journal》 14 (1): 88–90. PMID15695964.
Shao, WJ; Li, GC; Zhang, ZK (September 2009). “Systematic review and meta-analysis of randomized controlled trials comparing botulinum toxin injection with lateral internal sphincterotomy for chronic anal fissure”. 《International journal of colorectal disease》 24 (9): 995–1000. doi:10.1007/s00384-009-0683-5. PMID19266207.
