Mennigen, R The OTSC(®) proctology clip system for the closure of refractory anal fistulas. [electronic resource] - Techniques in coloproctology Apr 2015 - 241-6 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 1128-045X Standard No.: 10.1007/s10151-015-1284-7 doi Subjects--Topical Terms: AdultAgedColorectal Surgery--instrumentationCrohn Disease--complicationsFemaleFollow-Up StudiesHumansMaleMiddle AgedRectal Fistula--etiologyRetrospective StudiesSurgical InstrumentsTreatment Outcome