van Onkelen, RS; Gosselink, MP; Schouten, WR (February 2012). "Is it possible to improve the outcome of transanal advancement flap repair for high transsphincteric fistulas by additional ligation of the intersphincteric fistula tract?". Diseases of the Colon and Rectum. 55 (2): 163–6. doi:10.1097/DCR.0b013e31823c0f74. PMID22228159. S2CID25873518.
Prosst RL, Herold A, Joos AK, Bussen D, Wehrmann M, Gottwald T, Schurr MO (September 2012). "The anal fistula claw: the OTSC clip for anal fistula closure". Colorectal Disease. 14 (9): 1112–7. doi:10.1111/j.1463-1318.2011.02902.x. PMID22122680. S2CID2605631.
Prosst RL, Ehni W (July 2012). "The OTSC Proctology clip system for anorectal fistula closure: the 'anal fistula claw': case report". Minim Invasive Ther Allied Technol. 21 (4): 307–12. doi:10.3109/13645706.2012.692690. PMID22657572. S2CID23099041.
Prosst RL, Ehni W, Joos AK (September 2013). "The OTSC Proctology clip system for anal fistula closure: first prospective clinical data". Minim Invasive Ther Allied Technol. 22 (5): 255–9. doi:10.3109/13645706.2013.826675. PMID23971828. S2CID25219225.
Mennigen R, Laukötter M, Senninger N, Rijcken E (April 2015). "The OTSC(®) proctology clip system for the closure of refractory anal fistulas". Tech Coloproctol. 19 (4): 241–6. doi:10.1007/s10151-015-1284-7. PMID25715788. S2CID23284320.
Rojanasakul A, Pattanaarun J, Sahakitrungruang C, Tantiphlachiva K (March 2007). "Total anal sphincter saving technique for fistula-in-ano; the ligation of intersphincteric fistula tract". J Med Assoc Thai. 90 (3): 581–6. PMID17427539.
van Onkelen, RS; Gosselink, MP; Schouten, WR (February 2012). "Is it possible to improve the outcome of transanal advancement flap repair for high transsphincteric fistulas by additional ligation of the intersphincteric fistula tract?". Diseases of the Colon and Rectum. 55 (2): 163–6. doi:10.1097/DCR.0b013e31823c0f74. PMID22228159. S2CID25873518.
Prosst RL, Herold A, Joos AK, Bussen D, Wehrmann M, Gottwald T, Schurr MO (September 2012). "The anal fistula claw: the OTSC clip for anal fistula closure". Colorectal Disease. 14 (9): 1112–7. doi:10.1111/j.1463-1318.2011.02902.x. PMID22122680. S2CID2605631.
Prosst RL, Ehni W (July 2012). "The OTSC Proctology clip system for anorectal fistula closure: the 'anal fistula claw': case report". Minim Invasive Ther Allied Technol. 21 (4): 307–12. doi:10.3109/13645706.2012.692690. PMID22657572. S2CID23099041.
Prosst RL, Ehni W, Joos AK (September 2013). "The OTSC Proctology clip system for anal fistula closure: first prospective clinical data". Minim Invasive Ther Allied Technol. 22 (5): 255–9. doi:10.3109/13645706.2013.826675. PMID23971828. S2CID25219225.
Mennigen R, Laukötter M, Senninger N, Rijcken E (April 2015). "The OTSC(®) proctology clip system for the closure of refractory anal fistulas". Tech Coloproctol. 19 (4): 241–6. doi:10.1007/s10151-015-1284-7. PMID25715788. S2CID23284320.
van Onkelen, RS; Gosselink, MP; Schouten, WR (February 2012). "Is it possible to improve the outcome of transanal advancement flap repair for high transsphincteric fistulas by additional ligation of the intersphincteric fistula tract?". Diseases of the Colon and Rectum. 55 (2): 163–6. doi:10.1097/DCR.0b013e31823c0f74. PMID22228159. S2CID25873518.
Prosst RL, Herold A, Joos AK, Bussen D, Wehrmann M, Gottwald T, Schurr MO (September 2012). "The anal fistula claw: the OTSC clip for anal fistula closure". Colorectal Disease. 14 (9): 1112–7. doi:10.1111/j.1463-1318.2011.02902.x. PMID22122680. S2CID2605631.
Prosst RL, Ehni W (July 2012). "The OTSC Proctology clip system for anorectal fistula closure: the 'anal fistula claw': case report". Minim Invasive Ther Allied Technol. 21 (4): 307–12. doi:10.3109/13645706.2012.692690. PMID22657572. S2CID23099041.
Prosst RL, Ehni W, Joos AK (September 2013). "The OTSC Proctology clip system for anal fistula closure: first prospective clinical data". Minim Invasive Ther Allied Technol. 22 (5): 255–9. doi:10.3109/13645706.2013.826675. PMID23971828. S2CID25219225.
Mennigen R, Laukötter M, Senninger N, Rijcken E (April 2015). "The OTSC(®) proctology clip system for the closure of refractory anal fistulas". Tech Coloproctol. 19 (4): 241–6. doi:10.1007/s10151-015-1284-7. PMID25715788. S2CID23284320.