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Antropoli C, Perrotti P, Rubino M, Martino A, De Stefano G, Migliore G, Antropoli M, Piazza P. Nifedipine for local use in conservative treatment of anal fissures: preliminary results of a multicenter study. „Dis Colon Rectum”. 8 (42), s. 1011–5, 1999. DOI: 10.1007/BF02236693. PMID: 10458123.
Carapeti E, Kamm M, Phillips R. Topical diltiazem and bethanechol decrease anal sphincter pressure and heal anal fissures without side effects. „Dis. Colon Rectum”. 10 (43), s. 1359–62, 2000. DOI: 10.1007/BF02236630. PMID: 11052511.
Jost W, Schimrigk K. Use of botulinum toxin in anal fissure. „Dis Colon Rectum”. 10 (36), s. 974, 1993. DOI: 10.1007/BF02050639. PMID: 8404394.
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Abramowitz L., Sobhani I., Benifla JL., Vuagnat A., Daraï E., Mignon M., Madelenat P. Anal fissure and thrombosed external hemorrhoids before and after delivery.. „Diseases of the colon and rectum”. 5 (45), s. 650–5, maj 2002. PMID: 12004215.
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Loder P, Kamm M, Nicholls R, Phillips R. 'Reversible chemical sphincterotomy' by local application of glyceryl trinitrate. „Br J Surg”. 9 (81), s. 1386–9, 1994. DOI: 10.1002/bjs.1800810949. PMID: 7953427.
Watson S, Kamm M, Nicholls R, Phillips R. Topical glyceryl trinitrate in the treatment of chronic anal fissure. „Br J Surg”. 6 (83), s. 771–5, 1996. DOI: 10.1002/bjs.1800830614. PMID: 8696736.
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Antropoli C, Perrotti P, Rubino M, Martino A, De Stefano G, Migliore G, Antropoli M, Piazza P. Nifedipine for local use in conservative treatment of anal fissures: preliminary results of a multicenter study. „Dis Colon Rectum”. 8 (42), s. 1011–5, 1999. DOI: 10.1007/BF02236693. PMID: 10458123.
Carapeti E, Kamm M, Phillips R. Topical diltiazem and bethanechol decrease anal sphincter pressure and heal anal fissures without side effects. „Dis. Colon Rectum”. 10 (43), s. 1359–62, 2000. DOI: 10.1007/BF02236630. PMID: 11052511.
Jost W, Schimrigk K. Use of botulinum toxin in anal fissure. „Dis Colon Rectum”. 10 (36), s. 974, 1993. DOI: 10.1007/BF02050639. PMID: 8404394.