- A new polyurethane anal plug in the treatment of incontinence after anal atresia repair. Pfrommer, W., Holschneider, A.M., Löffler, N., Schauff, B., Ure, B.M. European journal of pediatric surgery : official journal of Austrian Association of Pediatric Surgery ... [et al] = Zeitschrift für Kinderchirurgie. (2000)